22001982 has 32 divisors (see below), whose sum is σ = 45505152. Its totient is φ = 7087584.

The previous prime is 22001897. The next prime is 22001989. The reversal of 22001982 is 28910022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27208 + ... + 28004.

It is an arithmetic number, because the mean of its divisors is an integer number (1422036).

Almost surely, 2^22001982 is an apocalyptic number.

22001982 is an abundant number, since it is smaller than the sum of its proper divisors (23503170).

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

22001982 is a wasteful number, since it uses less digits than its factorization.

22001982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 22001982 is about 4690.6270369749. The cubic root of 22001982 is about 280.2123474219.

The spelling of 22001982 in words is "twenty-two million, one thousand, nine hundred eighty-two".