78127976 has 24 divisors (see below), whose sum is σ = 148045170. Its totient is φ = 38653536.

The previous prime is 78127909. The next prime is 78128003. The reversal of 78127976 is 67972187.

It can be written as a sum of positive squares in only one way, i.e., 76983076 + 1144900 = 8774^2 + 1070^2 .

It is a super-2 number, since 2×78127976² = 12207961267713152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78127976.

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, 91166 + ... + 92018.

Almost surely, 2^78127976 is an apocalyptic number.

It is an amenable number.

78127976 is a deficient number, since it is larger than the sum of its proper divisors (69917194).

78127976 is a wasteful number, since it uses less digits than its factorization.

78127976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073 (or 962 counting only the distinct ones).

The product of its digits is 296352, while the sum is 47.

The square root of 78127976 is about 8839.0031112111. The cubic root of 78127976 is about 427.4994147479.

The spelling of 78127976 in words is "seventy-eight million, one hundred twenty-seven thousand, nine hundred seventy-six".