77231922 has 16 divisors (see below), whose sum is σ = 162593760. Its totient is φ = 24388992.

The previous prime is 77231909. The next prime is 77231923. The reversal of 77231922 is 22913277.

It is not an unprimeable number, because it can be changed into a prime (77231923) 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, 338623 + ... + 338850.

It is an arithmetic number, because the mean of its divisors is an integer number (10162110).

Almost surely, 2^77231922 is an apocalyptic number.

77231922 is an abundant number, since it is smaller than the sum of its proper divisors (85361838).

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

77231922 is a wasteful number, since it uses less digits than its factorization.

77231922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677497.

The product of its digits is 10584, while the sum is 33.

The square root of 77231922 is about 8788.1694339606. The cubic root of 77231922 is about 425.8587885241.

The spelling of 77231922 in words is "seventy-seven million, two hundred thirty-one thousand, nine hundred twenty-two".