30228736 has 18 divisors (see below), whose sum is σ = 60339902. Its totient is φ = 15114240.

The previous prime is 30228659. The next prime is 30228769. The reversal of 30228736 is 63782203.

It can be written as a sum of positive squares in only one way, i.e., 25563136 + 4665600 = 5056^2 + 2160^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30228698 and 30228707.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58785 + ... + 59296.

Almost surely, 2^30228736 is an apocalyptic number.

It is an amenable number.

30228736 is a deficient number, since it is larger than the sum of its proper divisors (30111166).

30228736 is an equidigital number, since it uses as much as digits as its factorization.

30228736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118097 (or 118083 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 30228736 is about 5498.0665692587. The cubic root of 30228736 is about 311.5109585998.

The spelling of 30228736 in words is "thirty million, two hundred twenty-eight thousand, seven hundred thirty-six".