Search a number
-
+
103180840 = 23572997131
BaseRepresentation
bin1100010011001…
…10101000101000
321012011010111121
412021212220220
5202403241330
614123305024
72362010530
oct611465050
9235133447
10103180840
1153274324
122a67b174
13184b8569
14d9bc4c0
1590d217a
hex6266a28

103180840 has 128 divisors (see below), whose sum is σ = 279417600. Its totient is φ = 33546240.

The previous prime is 103180801. The next prime is 103180843. The reversal of 103180840 is 48081301.

It is not an unprimeable number, because it can be changed into a prime (103180843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 787575 + ... + 787705.

It is an arithmetic number, because the mean of its divisors is an integer number (2182950).

Almost surely, 2103180840 is an apocalyptic number.

103180840 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 103180840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139708800).

103180840 is an abundant number, since it is smaller than the sum of its proper divisors (176236760).

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

103180840 is a wasteful number, since it uses less digits than its factorization.

103180840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 103180840 is about 10157.7970052566. The cubic root of 103180840 is about 469.0289897111.

The spelling of 103180840 in words is "one hundred three million, one hundred eighty thousand, eight hundred forty".

Divisors: 1 2 4 5 7 8 10 14 20 28 29 35 40 56 58 70 97 116 131 140 145 194 203 232 262 280 290 388 406 485 524 580 655 679 776 812 917 970 1015 1048 1160 1310 1358 1624 1834 1940 2030 2620 2716 2813 3395 3668 3799 3880 4060 4585 5240 5432 5626 6790 7336 7598 8120 9170 11252 12707 13580 14065 15196 18340 18995 19691 22504 25414 26593 27160 28130 30392 36680 37990 39382 50828 53186 56260 63535 75980 78764 88949 98455 101656 106372 112520 127070 132965 151960 157528 177898 196910 212744 254140 265930 355796 368503 393820 444745 508280 531860 711592 737006 787640 889490 1063720 1474012 1778980 1842515 2579521 2948024 3557960 3685030 5159042 7370060 10318084 12897605 14740120 20636168 25795210 51590420 103180840