77222928 has 40 divisors (see below), whose sum is σ = 201031776. Its totient is φ = 25542400.

The previous prime is 77222923. The next prime is 77222933. The reversal of 77222928 is 82922277.

It is an interprime number because it is at equal distance from previous prime (77222923) and next prime (77222933).

It is not an unprimeable number, because it can be changed into a prime (77222921) 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, 148 + ... + 12428.

Almost surely, 2^77222928 is an apocalyptic number.

It is an amenable number.

77222928 is an abundant number, since it is smaller than the sum of its proper divisors (123808848).

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

77222928 is a wasteful number, since it uses less digits than its factorization.

77222928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12423 (or 12417 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 77222928 is about 8787.6577083999. The cubic root of 77222928 is about 425.8422568339.

The spelling of 77222928 in words is "seventy-seven million, two hundred twenty-two thousand, nine hundred twenty-eight".