30523998 has 16 divisors (see below), whose sum is σ = 61117056. Its totient is φ = 10163160.

The previous prime is 30523981. The next prime is 30524041. The reversal of 30523998 is 89932503.

It is a congruent number.

It is an unprimeable number.

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, 4215 + ... + 8877.

It is an arithmetic number, because the mean of its divisors is an integer number (3819816).

Almost surely, 2^30523998 is an apocalyptic number.

30523998 is an abundant number, since it is smaller than the sum of its proper divisors (30593058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30523998 is a wasteful number, since it uses less digits than its factorization.

30523998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 30523998 is about 5524.8527582190. The cubic root of 30523998 is about 312.5219116369.

The spelling of 30523998 in words is "thirty million, five hundred twenty-three thousand, nine hundred ninety-eight".