137645628 has 36 divisors (see below), whose sum is σ = 325318392. Its totient is φ = 45292800.

The previous prime is 137645591. The next prime is 137645647. The reversal of 137645628 is 826546731.

It is a self number, because there is not a number n which added to its sum of digits gives 137645628.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 408276 + ... + 408612.

It is an arithmetic number, because the mean of its divisors is an integer number (9036622).

Almost surely, 2^137645628 is an apocalyptic number.

It is an amenable number.

137645628 is an abundant number, since it is smaller than the sum of its proper divisors (187672764).

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

137645628 is a wasteful number, since it uses less digits than its factorization.

137645628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 443 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 137645628 is about 11732.2473550467. The cubic root of 137645628 is about 516.3222102714.

The spelling of 137645628 in words is "one hundred thirty-seven million, six hundred forty-five thousand, six hundred twenty-eight".