77127312 has 40 divisors (see below), whose sum is σ = 201121056. Its totient is φ = 25467136.

The previous prime is 77127299. The next prime is 77127331. The reversal of 77127312 is 21372177.

It is a self number, because there is not a number n which added to its sum of digits gives 77127312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2373 + ... + 12644.

Almost surely, 2^77127312 is an apocalyptic number.

It is an amenable number.

77127312 is an abundant number, since it is smaller than the sum of its proper divisors (123993744).

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

77127312 is a wasteful number, since it uses less digits than its factorization.

77127312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15135 (or 15129 counting only the distinct ones).

The product of its digits is 4116, while the sum is 30.

The square root of 77127312 is about 8782.2156657645. The cubic root of 77127312 is about 425.6664275778. Note that the first 3 decimals are identical.

Adding to 77127312 its reverse (21372177), we get a palindrome (98499489).

The spelling of 77127312 in words is "seventy-seven million, one hundred twenty-seven thousand, three hundred twelve".