77418930 has 16 divisors (see below), whose sum is σ = 185805504. Its totient is φ = 20645040.

The previous prime is 77418919. The next prime is 77418931. The reversal of 77418930 is 3981477.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77418931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290286 + ... + 1290345.

It is an arithmetic number, because the mean of its divisors is an integer number (11612844).

Almost surely, 2^77418930 is an apocalyptic number.

77418930 is an abundant number, since it is smaller than the sum of its proper divisors (108386574).

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

77418930 is a wasteful number, since it uses less digits than its factorization.

77418930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580641.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 77418930 is about 8798.8027594668. The cubic root of 77418930 is about 426.2022337636.

The spelling of 77418930 in words is "seventy-seven million, four hundred eighteen thousand, nine hundred thirty".