138762628 has 24 divisors (see below), whose sum is σ = 247154432. Its totient is φ = 68153184.

The previous prime is 138762623. The next prime is 138762641. The reversal of 138762628 is 826267831.

138762628 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (138762623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162250 + ... + 163102.

Almost surely, 2^138762628 is an apocalyptic number.

It is an amenable number.

138762628 is a deficient number, since it is larger than the sum of its proper divisors (108391804).

138762628 is a wasteful number, since it uses less digits than its factorization.

138762628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531 (or 1529 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 138762628 is about 11779.7550059413. The cubic root of 138762628 is about 517.7151079728.

The spelling of 138762628 in words is "one hundred thirty-eight million, seven hundred sixty-two thousand, six hundred twenty-eight".