30820492 has 12 divisors (see below), whose sum is σ = 54023760. Its totient is φ = 15385136.

The previous prime is 30820477. The next prime is 30820549. The reversal of 30820492 is 29402803.

It is a self number, because there is not a number n which added to its sum of digits gives 30820492.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3367 + ... + 8542.

It is an arithmetic number, because the mean of its divisors is an integer number (4501980).

Almost surely, 2^30820492 is an apocalyptic number.

It is an amenable number.

30820492 is a deficient number, since it is larger than the sum of its proper divisors (23203268).

30820492 is a wasteful number, since it uses less digits than its factorization.

30820492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12560 (or 12558 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 30820492 is about 5551.6206642745. The cubic root of 30820492 is about 313.5305438251.

The spelling of 30820492 in words is "thirty million, eight hundred twenty thousand, four hundred ninety-two".