77113218 has 32 divisors (see below), whose sum is σ = 189818496. Its totient is φ = 20337408.

The previous prime is 77113189. The next prime is 77113237. The reversal of 77113218 is 81231177.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 70071 + ... + 71162.

It is an arithmetic number, because the mean of its divisors is an integer number (5931828).

Almost surely, 2^77113218 is an apocalyptic number.

77113218 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

77113218 is an abundant number, since it is smaller than the sum of its proper divisors (112705278).

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

77113218 is a wasteful number, since it uses less digits than its factorization.

77113218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141258.

The product of its digits is 2352, while the sum is 30.

The square root of 77113218 is about 8781.4132120064. The cubic root of 77113218 is about 425.6404976880.

The spelling of 77113218 in words is "seventy-seven million, one hundred thirteen thousand, two hundred eighteen".