30912797 has 8 divisors (see below), whose sum is σ = 32773632. Its totient is φ = 29106000.

The previous prime is 30912781. The next prime is 30912803. The reversal of 30912797 is 79721903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30912797 - 2⁴ = 30912781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30912797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30912397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12329 + ... + 14622.

It is an arithmetic number, because the mean of its divisors is an integer number (4096704).

Almost surely, 2^30912797 is an apocalyptic number.

30912797 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30912797 is a deficient number, since it is larger than the sum of its proper divisors (1860835).

30912797 is a wasteful number, since it uses less digits than its factorization.

30912797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27019.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 30912797 is about 5559.9277873008. The cubic root of 30912797 is about 313.8432318181.

The spelling of 30912797 in words is "thirty million, nine hundred twelve thousand, seven hundred ninety-seven".