30981882 has 16 divisors (see below), whose sum is σ = 62059680. Its totient is φ = 10311312.

The previous prime is 30981877. The next prime is 30981911. The reversal of 30981882 is 28818903.

It is a self number, because there is not a number n which added to its sum of digits gives 30981882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613 + ... + 7895.

It is an arithmetic number, because the mean of its divisors is an integer number (3878730).

Almost surely, 2^30981882 is an apocalyptic number.

30981882 is an abundant number, since it is smaller than the sum of its proper divisors (31077798).

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

30981882 is a wasteful number, since it uses less digits than its factorization.

30981882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7997.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 30981882 is about 5566.1370805973. The cubic root of 30981882 is about 314.0768538129.

The spelling of 30981882 in words is "thirty million, nine hundred eighty-one thousand, eight hundred eighty-two".