30990427 has 8 divisors (see below), whose sum is σ = 33435360. Its totient is φ = 28554240.

The previous prime is 30990419. The next prime is 30990493. The reversal of 30990427 is 72409903.

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

It is not a de Polignac number, because 30990427 - 2³ = 30990419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30990392 and 30990401.

It is not an unprimeable number, because it can be changed into a prime (30990227) 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 7 ways as a sum of consecutive naturals, for example, 6474 + ... + 10192.

It is an arithmetic number, because the mean of its divisors is an integer number (4179420).

Almost surely, 2^30990427 is an apocalyptic number.

30990427 is a deficient number, since it is larger than the sum of its proper divisors (2444933).

30990427 is a wasteful number, since it uses less digits than its factorization.

30990427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 30990427 is about 5566.9046156729. The cubic root of 30990427 is about 314.1057259563.

The spelling of 30990427 in words is "thirty million, nine hundred ninety thousand, four hundred twenty-seven".