72978914 has 8 divisors (see below), whose sum is σ = 109517520. Its totient is φ = 36473076.

The previous prime is 72978907. The next prime is 72978923. The reversal of 72978914 is 41987927.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1544 + ... + 12179.

It is an arithmetic number, because the mean of its divisors is an integer number (13689690).

Almost surely, 2^72978914 is an apocalyptic number.

72978914 is a deficient number, since it is larger than the sum of its proper divisors (36538606).

72978914 is a wasteful number, since it uses less digits than its factorization.

72978914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16384.

The product of its digits is 254016, while the sum is 47.

The square root of 72978914 is about 8542.7696913823. The cubic root of 72978914 is about 417.8936757876.

The spelling of 72978914 in words is "seventy-two million, nine hundred seventy-eight thousand, nine hundred fourteen".