137870856 has 64 divisors (see below), whose sum is σ = 386755200. Its totient is φ = 45503424.

The previous prime is 137870849. The next prime is 137870869. The reversal of 137870856 is 658078731.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19150 + ... + 25346.

It is an arithmetic number, because the mean of its divisors is an integer number (6043050).

Almost surely, 2^137870856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 137870856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193377600).

137870856 is an abundant number, since it is smaller than the sum of its proper divisors (248884344).

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

137870856 is a wasteful number, since it uses less digits than its factorization.

137870856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6315 (or 6305 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 137870856 is about 11741.8421042015. The cubic root of 137870856 is about 516.6036742256.

The spelling of 137870856 in words is "one hundred thirty-seven million, eight hundred seventy thousand, eight hundred fifty-six".