30902492 has 12 divisors (see below), whose sum is σ = 54379416. Its totient is φ = 15365520.

The previous prime is 30902483. The next prime is 30902497. The reversal of 30902492 is 29420903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30902497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20618 + ... + 22065.

It is an arithmetic number, because the mean of its divisors is an integer number (4531618).

Almost surely, 2^30902492 is an apocalyptic number.

It is an amenable number.

30902492 is a deficient number, since it is larger than the sum of its proper divisors (23476924).

30902492 is a wasteful number, since it uses less digits than its factorization.

30902492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42868 (or 42866 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 30902492 is about 5559.0009893865. Note that the first 3 decimals coincide. The cubic root of 30902492 is about 313.8083539869.

The spelling of 30902492 in words is "thirty million, nine hundred two thousand, four hundred ninety-two".