77482512 has 30 divisors (see below), whose sum is σ = 216843822. Its totient is φ = 25827456.

The previous prime is 77482507. The next prime is 77482523. The reversal of 77482512 is 21528477.

It can be written as a sum of positive squares in only one way, i.e., 77369616 + 112896 = 8796^2 + 336^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268893 + ... + 269180.

Almost surely, 2^77482512 is an apocalyptic number.

77482512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

77482512 is an abundant number, since it is smaller than the sum of its proper divisors (139361310).

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

77482512 is a wasteful number, since it uses less digits than its factorization.

77482512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538087 (or 538078 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 77482512 is about 8802.4151231352. The cubic root of 77482512 is about 426.3188778252.

The spelling of 77482512 in words is "seventy-seven million, four hundred eighty-two thousand, five hundred twelve".