30749228 has 12 divisors (see below), whose sum is σ = 53973192. Its totient is φ = 15328320.

The previous prime is 30749197. The next prime is 30749231. The reversal of 30749228 is 82294703.

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, 10058 + ... + 12753.

It is an arithmetic number, because the mean of its divisors is an integer number (4497766).

Almost surely, 2^30749228 is an apocalyptic number.

It is an amenable number.

30749228 is a deficient number, since it is larger than the sum of its proper divisors (23223964).

30749228 is a wasteful number, since it uses less digits than its factorization.

30749228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23152 (or 23150 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 30749228 is about 5545.1986438720. The cubic root of 30749228 is about 313.2887059825.

The spelling of 30749228 in words is "thirty million, seven hundred forty-nine thousand, two hundred twenty-eight".