137856768 has 72 divisors (see below), whose sum is σ = 419330688. Its totient is φ = 39386112.

The previous prime is 137856739. The next prime is 137856773. The reversal of 137856768 is 867658731.

It is a self number, because there is not a number n which added to its sum of digits gives 137856768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7446 + ... + 18197.

Almost surely, 2^137856768 is an apocalyptic number.

It is an amenable number.

137856768 is an abundant number, since it is smaller than the sum of its proper divisors (281473920).

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

137856768 is an equidigital number, since it uses as much as digits as its factorization.

137856768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25669 (or 25655 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 137856768 is about 11741.2421830060. The cubic root of 137856768 is about 516.5860776606.

The spelling of 137856768 in words is "one hundred thirty-seven million, eight hundred fifty-six thousand, seven hundred sixty-eight".