22083981 has 4 divisors (see below), whose sum is σ = 29445312. Its totient is φ = 14722652.

The previous prime is 22083967. The next prime is 22084001. The reversal of 22083981 is 18938022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22083981 - 2⁵ = 22083949 is a prime.

It is a super-2 number, since 2×22083981² = 975404433616722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22083781) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3680661 + ... + 3680666.

It is an arithmetic number, because the mean of its divisors is an integer number (7361328).

Almost surely, 2^22083981 is an apocalyptic number.

It is an amenable number.

22083981 is a deficient number, since it is larger than the sum of its proper divisors (7361331).

22083981 is an equidigital number, since it uses as much as digits as its factorization.

22083981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7361330.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 22083981 is about 4699.3596372272. The cubic root of 22083981 is about 280.5600228692.

The spelling of 22083981 in words is "twenty-two million, eighty-three thousand, nine hundred eighty-one".