22001983 has 4 divisors (see below), whose sum is σ = 22013208. Its totient is φ = 21990760.

The previous prime is 22001897. The next prime is 22001989. The reversal of 22001983 is 38910022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22001983 - 2²¹ = 19904831 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1816 + ... + 6877.

It is an arithmetic number, because the mean of its divisors is an integer number (5503302).

Almost surely, 2^22001983 is an apocalyptic number.

22001983 is a deficient number, since it is larger than the sum of its proper divisors (11225).

22001983 is an equidigital number, since it uses as much as digits as its factorization.

22001983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11224.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 22001983 is about 4690.6271435705. The cubic root of 22001983 is about 280.2123516671.

The spelling of 22001983 in words is "twenty-two million, one thousand, nine hundred eighty-three".