72580228 has 24 divisors (see below), whose sum is σ = 152801600. Its totient is φ = 29468448.

The previous prime is 72580213. The next prime is 72580279. The reversal of 72580228 is 82208527.

It is a junction number, because it is equal to n+sod(n) for n = 72580193 and 72580202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67683 + ... + 68746.

Almost surely, 2^72580228 is an apocalyptic number.

It is an amenable number.

72580228 is an abundant number, since it is smaller than the sum of its proper divisors (80221372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72580228 is a wasteful number, since it uses less digits than its factorization.

72580228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136459 (or 136457 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 72580228 is about 8519.4030307293. The cubic root of 72580228 is about 417.1312972294.

The spelling of 72580228 in words is "seventy-two million, five hundred eighty thousand, two hundred twenty-eight".