30491492 has 6 divisors (see below), whose sum is σ = 53360118. Its totient is φ = 15245744.

The previous prime is 30491479. The next prime is 30491567. The reversal of 30491492 is 29419403.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23658496 + 6832996 = 4864^2 + 2614^2 .

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 as a sum of consecutive naturals, namely, 3811433 + ... + 3811440.

It is an arithmetic number, because the mean of its divisors is an integer number (8893353).

Almost surely, 2^30491492 is an apocalyptic number.

It is an amenable number.

30491492 is a deficient number, since it is larger than the sum of its proper divisors (22868626).

30491492 is a wasteful number, since it uses less digits than its factorization.

30491492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7622877 (or 7622875 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 30491492 is about 5521.9101767414. The cubic root of 30491492 is about 312.4109339776.

The spelling of 30491492 in words is "thirty million, four hundred ninety-one thousand, four hundred ninety-two".