22980981 has 8 divisors (see below), whose sum is σ = 30669984. Its totient is φ = 15306320.

The previous prime is 22980977. The next prime is 22980989. The reversal of 22980981 is 18908922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22980981 - 2² = 22980977 is a prime.

It is a super-2 number, since 2×22980981² = 1056250975444722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22980989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (3833748).

Almost surely, 2^22980981 is an apocalyptic number.

It is an amenable number.

22980981 is a deficient number, since it is larger than the sum of its proper divisors (7689003).

22980981 is a wasteful number, since it uses less digits than its factorization.

22980981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7171.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 22980981 is about 4793.8482454079. The cubic root of 22980981 is about 284.3082886786.

The spelling of 22980981 in words is "twenty-two million, nine hundred eighty thousand, nine hundred eighty-one".