77152242 has 64 divisors (see below), whose sum is σ = 166699008. Its totient is φ = 23760000.

The previous prime is 77152241. The next prime is 77152249. The reversal of 77152242 is 24225177.

It is not an unprimeable number, because it can be changed into a prime (77152241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 510867 + ... + 511017.

It is an arithmetic number, because the mean of its divisors is an integer number (2604672).

Almost surely, 2^77152242 is an apocalyptic number.

77152242 is an abundant number, since it is smaller than the sum of its proper divisors (89546766).

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

77152242 is a wasteful number, since it uses less digits than its factorization.

77152242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295.

The product of its digits is 7840, while the sum is 30.

The square root of 77152242 is about 8783.6348967839. The cubic root of 77152242 is about 425.7122856127.

The spelling of 77152242 in words is "seventy-seven million, one hundred fifty-two thousand, two hundred forty-two".