30990763 has 8 divisors (see below), whose sum is σ = 32500800. Its totient is φ = 29510208.

The previous prime is 30990737. The next prime is 30990769. The reversal of 30990763 is 36709903.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30990763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30990769) 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, 5203 + ... + 9436.

It is an arithmetic number, because the mean of its divisors is an integer number (4062600).

Almost surely, 2^30990763 is an apocalyptic number.

30990763 is a deficient number, since it is larger than the sum of its proper divisors (1510037).

30990763 is a wasteful number, since it uses less digits than its factorization.

30990763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14741.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 30990763 is about 5566.9347939418. The cubic root of 30990763 is about 314.1068611363.

The spelling of 30990763 in words is "thirty million, nine hundred ninety thousand, seven hundred sixty-three".