77422772 has 12 divisors (see below), whose sum is σ = 154845600. Its totient is φ = 33181176.

The previous prime is 77422769. The next prime is 77422783. The reversal of 77422772 is 27722477.

77422772 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

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, 1382522 + ... + 1382577.

It is an arithmetic number, because the mean of its divisors is an integer number (12903800).

Almost surely, 2^77422772 is an apocalyptic number.

It is an amenable number.

77422772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77422772 is a wasteful number, since it uses less digits than its factorization.

77422772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765110 (or 2765108 counting only the distinct ones).

The product of its digits is 76832, while the sum is 38.

The square root of 77422772 is about 8799.0210819159. The cubic root of 77422772 is about 426.2092838993.

The spelling of 77422772 in words is "seventy-seven million, four hundred twenty-two thousand, seven hundred seventy-two".