78127672 has 16 divisors (see below), whose sum is σ = 167416560. Its totient is φ = 33483264.

The previous prime is 78127667. The next prime is 78127681. The reversal of 78127672 is 27672187.

It is a super-2 number, since 2×78127672² = 12207866264279168, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697513 + ... + 697624.

It is an arithmetic number, because the mean of its divisors is an integer number (10463535).

Almost surely, 2^78127672 is an apocalyptic number.

It is an amenable number.

78127672 is an abundant number, since it is smaller than the sum of its proper divisors (89288888).

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

78127672 is a wasteful number, since it uses less digits than its factorization.

78127672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395150 (or 1395146 counting only the distinct ones).

The product of its digits is 65856, while the sum is 40.

The square root of 78127672 is about 8838.9859146850. The cubic root of 78127672 is about 427.4988602731.

The spelling of 78127672 in words is "seventy-eight million, one hundred twenty-seven thousand, six hundred seventy-two".