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137025850 = 25213210809
BaseRepresentation
bin10000010101011…
…01100100111010
3100112211122010111
420022231210322
5240034311400
621332534534
73252462163
oct1012554472
9315748114
10137025850
1170390605
1239a8144a
13225086b0
14142ac76a
15c06a3ba
hex82ad93a

137025850 has 24 divisors (see below), whose sum is σ = 274474620. Its totient is φ = 50593920.

The previous prime is 137025839. The next prime is 137025857. The reversal of 137025850 is 58520731.

It can be written as a sum of positive squares in 6 ways, for example, as 15342889 + 121682961 = 3917^2 + 11031^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (137025857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104755 + ... + 106054.

Almost surely, 2137025850 is an apocalyptic number.

137025850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137025850 is an abundant number, since it is smaller than the sum of its proper divisors (137448770).

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

137025850 is a wasteful number, since it uses less digits than its factorization.

137025850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210834 (or 210829 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 137025850 is about 11705.8041159076. The cubic root of 137025850 is about 515.5460949354.

The spelling of 137025850 in words is "one hundred thirty-seven million, twenty-five thousand, eight hundred fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 210809 421618 1054045 2108090 2740517 5270225 5481034 10540450 13702585 27405170 68512925 137025850