30210428 has 12 divisors (see below), whose sum is σ = 55978272. Its totient is φ = 14216640.

The previous prime is 30210409. The next prime is 30210457. The reversal of 30210428 is 82401203.

It is a congruent number.

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, 222068 + ... + 222203.

It is an arithmetic number, because the mean of its divisors is an integer number (4664856).

Almost surely, 2^30210428 is an apocalyptic number.

It is an amenable number.

30210428 is a deficient number, since it is larger than the sum of its proper divisors (25767844).

30210428 is a wasteful number, since it uses less digits than its factorization.

30210428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444292 (or 444290 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 30210428 is about 5496.4013681681. The cubic root of 30210428 is about 311.4480571453.

The spelling of 30210428 in words is "thirty million, two hundred ten thousand, four hundred twenty-eight".