22681081 has 8 divisors (see below), whose sum is σ = 23591744. Its totient is φ = 21787920.

The previous prime is 22681073. The next prime is 22681091. The reversal of 22681081 is 18018622.

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 22681081 - 2³ = 22681073 is a prime.

It is a super-2 number, since 2×22681081² = 1028862870657122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22681031) 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, 1701 + ... + 6946.

It is an arithmetic number, because the mean of its divisors is an integer number (2948968).

Almost surely, 2^22681081 is an apocalyptic number.

It is an amenable number.

22681081 is a deficient number, since it is larger than the sum of its proper divisors (910663).

22681081 is an equidigital number, since it uses as much as digits as its factorization.

22681081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8751.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 22681081 is about 4762.4658528960. The cubic root of 22681081 is about 283.0661359497.

The spelling of 22681081 in words is "twenty-two million, six hundred eighty-one thousand, eighty-one".