73540228 has 12 divisors (see below), whose sum is σ = 128763712. Its totient is φ = 36750600.

The previous prime is 73540219. The next prime is 73540261. The reversal of 73540228 is 82204537.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 73540228.

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, 6601 + ... + 13807.

Almost surely, 2^73540228 is an apocalyptic number.

It is an amenable number.

73540228 is a deficient number, since it is larger than the sum of its proper divisors (55223484).

73540228 is a wasteful number, since it uses less digits than its factorization.

73540228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9762 (or 9760 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 73540228 is about 8575.5599234102. The cubic root of 73540228 is about 418.9623439862.

The spelling of 73540228 in words is "seventy-three million, five hundred forty thousand, two hundred twenty-eight".