77144132 has 48 divisors (see below), whose sum is σ = 149587200. Its totient is φ = 34594560.

The previous prime is 77144117. The next prime is 77144173. The reversal of 77144132 is 23144177.

It is a junction number, because it is equal to n+sod(n) for n = 77144095 and 77144104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365507 + ... + 365717.

It is an arithmetic number, because the mean of its divisors is an integer number (3116400).

Almost surely, 2^77144132 is an apocalyptic number.

It is an amenable number.

77144132 is a deficient number, since it is larger than the sum of its proper divisors (72443068).

77144132 is a wasteful number, since it uses less digits than its factorization.

77144132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 394 counting only the distinct ones).

The product of its digits is 4704, while the sum is 29.

The square root of 77144132 is about 8783.1732306724. The cubic root of 77144132 is about 425.6973685797.

The spelling of 77144132 in words is "seventy-seven million, one hundred forty-four thousand, one hundred thirty-two".