78338922 has 16 divisors (see below), whose sum is σ = 161732352. Its totient is φ = 25270560.

The previous prime is 78338903. The next prime is 78338971. The reversal of 78338922 is 22983387.

It is a super-2 number, since 2×78338922² = 12273973400244168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210403 + ... + 210774.

It is an arithmetic number, because the mean of its divisors is an integer number (10108272).

Almost surely, 2^78338922 is an apocalyptic number.

78338922 is an abundant number, since it is smaller than the sum of its proper divisors (83393430).

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

78338922 is a wasteful number, since it uses less digits than its factorization.

78338922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421213.

The product of its digits is 145152, while the sum is 42.

The square root of 78338922 is about 8850.9277479821. The cubic root of 78338922 is about 427.8838193114.

The spelling of 78338922 in words is "seventy-eight million, three hundred thirty-eight thousand, nine hundred twenty-two".