72866930 has 16 divisors (see below), whose sum is σ = 138876120. Its totient is φ = 27432192.

The previous prime is 72866929. The next prime is 72866939. The reversal of 72866930 is 3966827.

It can be written as a sum of positive squares in 4 ways, for example, as 47596201 + 25270729 = 6899^2 + 5027^2 .

It is not an unprimeable number, because it can be changed into a prime (72866939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214145 + ... + 214484.

Almost surely, 2^72866930 is an apocalyptic number.

72866930 is a deficient number, since it is larger than the sum of its proper divisors (66009190).

72866930 is a wasteful number, since it uses less digits than its factorization.

72866930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428653.

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

The square root of 72866930 is about 8536.2128605137. The cubic root of 72866930 is about 417.6798178403.

The spelling of 72866930 in words is "seventy-two million, eight hundred sixty-six thousand, nine hundred thirty".