77822272 has 28 divisors (see below), whose sum is σ = 168469056. Its totient is φ = 35373440.

The previous prime is 77822263. The next prime is 77822273. The reversal of 77822272 is 27222877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77822273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54568 + ... + 55975.

It is an arithmetic number, because the mean of its divisors is an integer number (6016752).

Almost surely, 2^77822272 is an apocalyptic number.

It is an amenable number.

77822272 is an abundant number, since it is smaller than the sum of its proper divisors (90646784).

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

77822272 is a wasteful number, since it uses less digits than its factorization.

77822272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110566 (or 110556 counting only the distinct ones).

The product of its digits is 43904, while the sum is 37.

The square root of 77822272 is about 8821.6932615003. The cubic root of 77822272 is about 426.9411038228.

The spelling of 77822272 in words is "seventy-seven million, eight hundred twenty-two thousand, two hundred seventy-two".