21119982 has 32 divisors (see below), whose sum is σ = 47886720. Its totient is φ = 6156000.

The previous prime is 21119953. The next prime is 21119999. The reversal of 21119982 is 28991112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5644 + ... + 8607.

It is an arithmetic number, because the mean of its divisors is an integer number (1496460).

Almost surely, 2^21119982 is an apocalyptic number.

21119982 is an abundant number, since it is smaller than the sum of its proper divisors (26766738).

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

21119982 is a wasteful number, since it uses less digits than its factorization.

21119982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14288.

The product of its digits is 2592, while the sum is 33.

The square root of 21119982 is about 4595.6481588564. The cubic root of 21119982 is about 276.4168506729.

The spelling of 21119982 in words is "twenty-one million, one hundred nineteen thousand, nine hundred eighty-two".