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137856100 = 22521378561
BaseRepresentation
bin10000011011110…
…00010001100100
3100121101211000111
420031320101210
5240242343400
621402422404
73262520554
oct1015702144
9317354014
10137856100
11708a8368
123a201a04
1322739575
1414447164
15c1813ba
hex8378464

137856100 has 18 divisors (see below), whose sum is σ = 299147954. Its totient is φ = 55142400.

The previous prime is 137856091. The next prime is 137856107. The reversal of 137856100 is 1658731.

It can be written as a sum of positive squares in 3 ways, for example, as 21086464 + 116769636 = 4592^2 + 10806^2 .

It is not an unprimeable number, because it can be changed into a prime (137856107) 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 5 ways as a sum of consecutive naturals, for example, 689181 + ... + 689380.

Almost surely, 2137856100 is an apocalyptic number.

137856100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137856100 is an abundant number, since it is smaller than the sum of its proper divisors (161291854).

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

137856100 is a wasteful number, since it uses less digits than its factorization.

137856100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378575 (or 1378568 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 137856100 is about 11741.2137362370. The cubic root of 137856100 is about 516.5852432678.

The spelling of 137856100 in words is "one hundred thirty-seven million, eight hundred fifty-six thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 1378561 2757122 5514244 6892805 13785610 27571220 34464025 68928050 137856100