77127456 has 48 divisors (see below), whose sum is σ = 231384384. Its totient is φ = 22036224.

The previous prime is 77127439. The next prime is 77127461. The reversal of 77127456 is 65472177.

It is a tau number, because it is divible by the number of its divisors (48).

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, 56715 + ... + 58058.

It is an arithmetic number, because the mean of its divisors is an integer number (4820508).

Almost surely, 2^77127456 is an apocalyptic number.

It is an amenable number.

77127456 is an abundant number, since it is smaller than the sum of its proper divisors (154256928).

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

77127456 is a wasteful number, since it uses less digits than its factorization.

77127456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114793 (or 114785 counting only the distinct ones).

The product of its digits is 82320, while the sum is 39.

The square root of 77127456 is about 8782.2238641474. The cubic root of 77127456 is about 425.6666924902. Note that the first 4 decimals are identical.

The spelling of 77127456 in words is "seventy-seven million, one hundred twenty-seven thousand, four hundred fifty-six".