74872228 has 6 divisors (see below), whose sum is σ = 131026406. Its totient is φ = 37436112.

The previous prime is 74872207. The next prime is 74872241. The reversal of 74872228 is 82227847.

It can be written as a sum of positive squares in only one way, i.e., 70023424 + 4848804 = 8368^2 + 2202^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9359025 + ... + 9359032.

Almost surely, 2^74872228 is an apocalyptic number.

It is an amenable number.

74872228 is a deficient number, since it is larger than the sum of its proper divisors (56154178).

74872228 is a wasteful number, since it uses less digits than its factorization.

74872228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18718061 (or 18718059 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 74872228 is about 8652.8739734264. The cubic root of 74872228 is about 421.4767141291.

The spelling of 74872228 in words is "seventy-four million, eight hundred seventy-two thousand, two hundred twenty-eight".