981942572 has 24 divisors (see below), whose sum is σ = 1947985200. Its totient is φ = 429350976.

The previous prime is 981942547. The next prime is 981942589. The reversal of 981942572 is 275249189.

It is a super-2 number, since 2×981942572² = 1928422429411950368, which contains 22 as substring.

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, 495947 + ... + 497922.

It is an arithmetic number, because the mean of its divisors is an integer number (81166050).

Almost surely, 2^981942572 is an apocalyptic number.

It is an amenable number.

981942572 is a deficient number, since it is larger than the sum of its proper divisors (966042628).

981942572 is a wasteful number, since it uses less digits than its factorization.

981942572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993905 (or 993903 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 981942572 is about 31335.9629180276. The cubic root of 981942572 is about 993.9442593640.

The spelling of 981942572 in words is "nine hundred eighty-one million, nine hundred forty-two thousand, five hundred seventy-two".