30124228 has 6 divisors (see below), whose sum is σ = 52717406. Its totient is φ = 15062112.

The previous prime is 30124207. The next prime is 30124229. The reversal of 30124228 is 82242103.

It can be written as a sum of positive squares in only one way, i.e., 30118144 + 6084 = 5488^2 + 78^2 .

It is a super-2 number, since 2×30124228² = 1814938225191968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30124199 and 30124208.

It is not an unprimeable number, because it can be changed into a prime (30124229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3765525 + ... + 3765532.

Almost surely, 2^30124228 is an apocalyptic number.

It is an amenable number.

30124228 is a deficient number, since it is larger than the sum of its proper divisors (22593178).

30124228 is a wasteful number, since it uses less digits than its factorization.

30124228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7531061 (or 7531059 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 30124228 is about 5488.5542723016. The cubic root of 30124228 is about 311.1515547006.

The spelling of 30124228 in words is "thirty million, one hundred twenty-four thousand, two hundred twenty-eight".