78910672 has 10 divisors (see below), whose sum is σ = 152889458. Its totient is φ = 39455328.

The previous prime is 78910589. The next prime is 78910687. The reversal of 78910672 is 27601987.

It can be written as a sum of positive squares in only one way, i.e., 51494976 + 27415696 = 7176^2 + 5236^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2465943 + ... + 2465974.

Almost surely, 2^78910672 is an apocalyptic number.

It is an amenable number.

78910672 is a deficient number, since it is larger than the sum of its proper divisors (73978786).

78910672 is a wasteful number, since it uses less digits than its factorization.

78910672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931925 (or 4931919 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 78910672 is about 8883.1679034002. The cubic root of 78910672 is about 428.9222550437.

The spelling of 78910672 in words is "seventy-eight million, nine hundred ten thousand, six hundred seventy-two".