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151988040 = 233253113619
BaseRepresentation
bin10010000111100…
…10011101001000
3101120222210101200
421003302131020
5302402104130
623025344200
73523606551
oct1103623510
9346883350
10151988040
117887a956
1242a98060
1325646a69
1416285328
15d523760
hex90f2748

151988040 has 96 divisors (see below), whose sum is σ = 509932800. Its totient is φ = 39219840.

The previous prime is 151988017. The next prime is 151988063. The reversal of 151988040 is 40889151.

151988040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (151988017) and next prime (151988063).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 151987986 and 151988004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4351 + ... + 17969.

It is an arithmetic number, because the mean of its divisors is an integer number (5311800).

Almost surely, 2151988040 is an apocalyptic number.

151988040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151988040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254966400).

151988040 is an abundant number, since it is smaller than the sum of its proper divisors (357944760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151988040 is a wasteful number, since it uses less digits than its factorization.

151988040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13667 (or 13660 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 151988040 is about 12328.3429543471. The cubic root of 151988040 is about 533.6663319721. Note that the first 3 decimals are identical.

The spelling of 151988040 in words is "one hundred fifty-one million, nine hundred eighty-eight thousand, forty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 31 36 40 45 60 62 72 90 93 120 124 155 180 186 248 279 310 360 372 465 558 620 744 930 1116 1240 1395 1860 2232 2790 3720 5580 11160 13619 27238 40857 54476 68095 81714 108952 122571 136190 163428 204285 245142 272380 326856 408570 422189 490284 544760 612855 817140 844378 980568 1225710 1266567 1634280 1688756 2110945 2451420 2533134 3377512 3799701 4221890 4902840 5066268 6332835 7599402 8443780 10132536 12665670 15198804 16887560 18998505 25331340 30397608 37997010 50662680 75994020 151988040