72930866 has 8 divisors (see below), whose sum is σ = 109444764. Its totient is φ = 36449280.

The previous prime is 72930857. The next prime is 72930877. The reversal of 72930866 is 66803927.

It can be written as a sum of positive squares in 2 ways, for example, as 71656225 + 1274641 = 8465^2 + 1129^2 .

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

It is a super-2 number, since 2×72930866² = 10637822431019912, which contains 22 as substring.

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, 1295 + ... + 12146.

Almost surely, 2^72930866 is an apocalyptic number.

72930866 is a deficient number, since it is larger than the sum of its proper divisors (36513898).

72930866 is a wasteful number, since it uses less digits than its factorization.

72930866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16156.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 72930866 is about 8539.9570256530. The cubic root of 72930866 is about 417.8019444349.

The spelling of 72930866 in words is "seventy-two million, nine hundred thirty thousand, eight hundred sixty-six".