138707630 has 8 divisors (see below), whose sum is σ = 249673752. Its totient is φ = 55483048.

The previous prime is 138707629. The next prime is 138707693. The reversal of 138707630 is 36707831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6935372 + ... + 6935391.

It is an arithmetic number, because the mean of its divisors is an integer number (31209219).

Almost surely, 2^138707630 is an apocalyptic number.

138707630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138707630 is a deficient number, since it is larger than the sum of its proper divisors (110966122).

138707630 is a wasteful number, since it uses less digits than its factorization.

138707630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13870770.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 138707630 is about 11777.4203457294. The cubic root of 138707630 is about 517.6467008459.

The spelling of 138707630 in words is "one hundred thirty-eight million, seven hundred seven thousand, six hundred thirty".