30492491 has 2 divisors, whose sum is σ = 30492492. Its totient is φ = 30492490.

The previous prime is 30492467. The next prime is 30492521. The reversal of 30492491 is 19429403.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30492491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30492431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15246245 + 15246246.

It is an arithmetic number, because the mean of its divisors is an integer number (15246246).

Almost surely, 2^30492491 is an apocalyptic number.

30492491 is a deficient number, since it is larger than the sum of its proper divisors (1).

30492491 is an equidigital number, since it uses as much as digits as its factorization.

30492491 is an odious number, because the sum of its binary digits is odd.

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

The square root of 30492491 is about 5522.0006338283. Note that the first 3 decimals coincide. The cubic root of 30492491 is about 312.4143458049.

The spelling of 30492491 in words is "thirty million, four hundred ninety-two thousand, four hundred ninety-one".