30990448 has 20 divisors (see below), whose sum is σ = 60942280. Its totient is φ = 15263424.

The previous prime is 30990419. The next prime is 30990493. The reversal of 30990448 is 84409903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13383 + ... + 15526.

It is an arithmetic number, because the mean of its divisors is an integer number (3047114).

Almost surely, 2^30990448 is an apocalyptic number.

It is an amenable number.

30990448 is a deficient number, since it is larger than the sum of its proper divisors (29951832).

30990448 is a wasteful number, since it uses less digits than its factorization.

30990448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28984 (or 28978 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 30990448 is about 5566.9065018195. The cubic root of 30990448 is about 314.1057969053.

The spelling of 30990448 in words is "thirty million, nine hundred ninety thousand, four hundred forty-eight".