72178768 has 20 divisors (see below), whose sum is σ = 143099968. Its totient is φ = 35249760.

The previous prime is 72178723. The next prime is 72178783. The reversal of 72178768 is 86787127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51768 + ... + 53143.

Almost surely, 2^72178768 is an apocalyptic number.

It is an amenable number.

72178768 is a deficient number, since it is larger than the sum of its proper divisors (70921200).

72178768 is a wasteful number, since it uses less digits than its factorization.

72178768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104962 (or 104956 counting only the distinct ones).

The product of its digits is 263424, while the sum is 46.

The square root of 72178768 is about 8495.8088490738. The cubic root of 72178768 is about 416.3607878443.

The spelling of 72178768 in words is "seventy-two million, one hundred seventy-eight thousand, seven hundred sixty-eight".