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152664400 = 2452727789
BaseRepresentation
bin10010001100101…
…11100101010000
3101122021011012001
421012113211100
5303040230100
623052043344
73532424500
oct1106274520
9348234161
10152664400
11791a2029
1243163554
1325822885
14163bda00
15d608d6a
hex9197950

152664400 has 90 divisors (see below), whose sum is σ = 426712830. Its totient is φ = 52335360.

The previous prime is 152664397. The next prime is 152664401. The reversal of 152664400 is 4466251.

It can be written as a sum of positive squares in 3 ways, for example, as 13046544 + 139617856 = 3612^2 + 11816^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152664401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15706 + ... + 23494.

Almost surely, 2152664400 is an apocalyptic number.

152664400 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 152664400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213356415).

152664400 is an abundant number, since it is smaller than the sum of its proper divisors (274048430).

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

152664400 is a wasteful number, since it uses less digits than its factorization.

152664400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7821 (or 7803 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 152664400 is about 12355.7436036849. The cubic root of 152664400 is about 534.4567811408.

The spelling of 152664400 in words is "one hundred fifty-two million, six hundred sixty-four thousand, four hundred".

Divisors: 1 2 4 5 7 8 10 14 16 20 25 28 35 40 49 50 56 70 80 98 100 112 140 175 196 200 245 280 350 392 400 490 560 700 784 980 1225 1400 1960 2450 2800 3920 4900 7789 9800 15578 19600 31156 38945 54523 62312 77890 109046 124624 155780 194725 218092 272615 311560 381661 389450 436184 545230 623120 763322 778900 872368 1090460 1363075 1526644 1557800 1908305 2180920 2726150 3053288 3115600 3816610 4361840 5452300 6106576 7633220 9541525 10904600 15266440 19083050 21809200 30532880 38166100 76332200 152664400