78137038 has 8 divisors (see below), whose sum is σ = 133949232. Its totient is φ = 33487296.

The previous prime is 78137027. The next prime is 78137041. The reversal of 78137038 is 83073187.

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

It is a super-2 number, since 2×78137038² = 12210793414826888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78136988 and 78137006.

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, 2790595 + ... + 2790622.

It is an arithmetic number, because the mean of its divisors is an integer number (16743654).

Almost surely, 2^78137038 is an apocalyptic number.

78137038 is a deficient number, since it is larger than the sum of its proper divisors (55812194).

78137038 is a wasteful number, since it uses less digits than its factorization.

78137038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5581226.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 78137038 is about 8839.5157107163. The cubic root of 78137038 is about 427.5159425447.

The spelling of 78137038 in words is "seventy-eight million, one hundred thirty-seven thousand, thirty-eight".