72880357 has 6 divisors (see below), whose sum is σ = 80108294. Its totient is φ = 66254760.

The previous prime is 72880351. The next prime is 72880373. The reversal of 72880357 is 75308827.

It can be written as a sum of positive squares in only one way, i.e., 38763076 + 34117281 = 6226^2 + 5841^2 .

It is not a de Polignac number, because 72880357 - 2¹⁹ = 72356069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72880351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 301038 + ... + 301279.

Almost surely, 2^72880357 is an apocalyptic number.

It is an amenable number.

72880357 is a deficient number, since it is larger than the sum of its proper divisors (7227937).

72880357 is a wasteful number, since it uses less digits than its factorization.

72880357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602339 (or 602328 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 72880357 is about 8536.9992971770. Note that the first 3 decimals coincide. The cubic root of 72880357 is about 417.7054711899.

It can be divided in two parts, 72880 and 357, that added together give a palindrome (73237).

The spelling of 72880357 in words is "seventy-two million, eight hundred eighty thousand, three hundred fifty-seven".