137628644 has 24 divisors (see below), whose sum is σ = 244194048. Its totient is φ = 67864320.

The previous prime is 137628629. The next prime is 137628671. The reversal of 137628644 is 446826731.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 166817 + ... + 167639.

It is an arithmetic number, because the mean of its divisors is an integer number (10174752).

Almost surely, 2^137628644 is an apocalyptic number.

It is an amenable number.

137628644 is a deficient number, since it is larger than the sum of its proper divisors (106565404).

137628644 is a wasteful number, since it uses less digits than its factorization.

137628644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1353 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 137628644 is about 11731.5235157246. The cubic root of 137628644 is about 516.3009731829.

The spelling of 137628644 in words is "one hundred thirty-seven million, six hundred twenty-eight thousand, six hundred forty-four".