138607630 has 64 divisors (see below), whose sum is σ = 303730560. Its totient is φ = 44457984.

The previous prime is 138607597. The next prime is 138607669. The reversal of 138607630 is 36706831.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 319894 + ... + 320326.

It is an arithmetic number, because the mean of its divisors is an integer number (4745790).

Almost surely, 2^138607630 is an apocalyptic number.

138607630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138607630 is an abundant number, since it is smaller than the sum of its proper divisors (165122930).

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

138607630 is a wasteful number, since it uses less digits than its factorization.

138607630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 138607630 is about 11773.1741684220. The cubic root of 138607630 is about 517.5222733846.

The spelling of 138607630 in words is "one hundred thirty-eight million, six hundred seven thousand, six hundred thirty".