72790184 has 8 divisors (see below), whose sum is σ = 136481610. Its totient is φ = 36395088.

The previous prime is 72790183. The next prime is 72790187. The reversal of 72790184 is 48109727.

It can be written as a sum of positive squares in only one way, i.e., 71402500 + 1387684 = 8450^2 + 1178^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (72790181) by changing a digit.

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 as a sum of consecutive naturals, namely, 4549379 + ... + 4549394.

Almost surely, 2^72790184 is an apocalyptic number.

It is an amenable number.

72790184 is a deficient number, since it is larger than the sum of its proper divisors (63691426).

72790184 is a wasteful number, since it uses less digits than its factorization.

72790184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9098779 (or 9098775 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 72790184 is about 8531.7163572168. The cubic root of 72790184 is about 417.5331279963.

The spelling of 72790184 in words is "seventy-two million, seven hundred ninety thousand, one hundred eighty-four".