30492797 has 4 divisors (see below), whose sum is σ = 30629760. Its totient is φ = 30355836.

The previous prime is 30492743. The next prime is 30492811. The reversal of 30492797 is 79729403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79729403 = 13 ⋅6133031.

It is a cyclic number.

It is not a de Polignac number, because 30492797 - 2⁸ = 30492541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30492727) 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 in 3 ways as a sum of consecutive naturals, for example, 68147 + ... + 68592.

It is an arithmetic number, because the mean of its divisors is an integer number (7657440).

Almost surely, 2^30492797 is an apocalyptic number.

It is an amenable number.

30492797 is a deficient number, since it is larger than the sum of its proper divisors (136963).

30492797 is a wasteful number, since it uses less digits than its factorization.

30492797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136962.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 30492797 is about 5522.0283411080. The cubic root of 30492797 is about 312.4153908542.

The spelling of 30492797 in words is "thirty million, four hundred ninety-two thousand, seven hundred ninety-seven".