30990475 has 6 divisors (see below), whose sum is σ = 38428220. Its totient is φ = 24792360.

The previous prime is 30990419. The next prime is 30990493. The reversal of 30990475 is 57409903.

It is not a de Polignac number, because 30990475 - 2²¹ = 28893323 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 619785 + ... + 619834.

Almost surely, 2^30990475 is an apocalyptic number.

30990475 is a deficient number, since it is larger than the sum of its proper divisors (7437745).

30990475 is a wasteful number, since it uses less digits than its factorization.

30990475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239629 (or 1239624 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 30990475 is about 5566.9089268642. The cubic root of 30990475 is about 314.1058881254.

The spelling of 30990475 in words is "thirty million, nine hundred ninety thousand, four hundred seventy-five".