78506672 has 20 divisors (see below), whose sum is σ = 152427000. Its totient is φ = 39170688.

The previous prime is 78506671. The next prime is 78506693. The reversal of 78506672 is 27660587.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (78506671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3068 + ... + 12900.

It is an arithmetic number, because the mean of its divisors is an integer number (7621350).

Almost surely, 2^78506672 is an apocalyptic number.

It is an amenable number.

78506672 is a deficient number, since it is larger than the sum of its proper divisors (73920328).

78506672 is a wasteful number, since it uses less digits than its factorization.

78506672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10340 (or 10334 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 78506672 is about 8860.3990880772. The cubic root of 78506672 is about 428.1890159980.

The spelling of 78506672 in words is "seventy-eight million, five hundred six thousand, six hundred seventy-two".