72568228 has 12 divisors (see below), whose sum is σ = 128525040. Its totient is φ = 35846792.

The previous prime is 72568217. The next prime is 72568231. The reversal of 72568228 is 82286527.

It is a super-2 number, since 2×72568228² = 10532295430119968, 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, 108958 + ... + 109621.

It is an arithmetic number, because the mean of its divisors is an integer number (10710420).

Almost surely, 2^72568228 is an apocalyptic number.

It is an amenable number.

72568228 is a deficient number, since it is larger than the sum of its proper divisors (55956812).

72568228 is a wasteful number, since it uses less digits than its factorization.

72568228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218666 (or 218664 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 72568228 is about 8518.6987269183. The cubic root of 72568228 is about 417.1083072610.

The spelling of 72568228 in words is "seventy-two million, five hundred sixty-eight thousand, two hundred twenty-eight".