22056681 has 8 divisors (see below), whose sum is σ = 29464864. Its totient is φ = 14676480.

The previous prime is 22056673. The next prime is 22056743. The reversal of 22056681 is 18665022.

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

It is not a de Polignac number, because 22056681 - 2³ = 22056673 is a prime.

It is a super-2 number, since 2×22056681² = 972994353471522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22096681) 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, 5080 + ... + 8361.

It is an arithmetic number, because the mean of its divisors is an integer number (3683108).

Almost surely, 2^22056681 is an apocalyptic number.

It is an amenable number.

22056681 is a deficient number, since it is larger than the sum of its proper divisors (7408183).

22056681 is a wasteful number, since it uses less digits than its factorization.

22056681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13991.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 22056681 is about 4696.4540879263. The cubic root of 22056681 is about 280.4443666853. Note that the first 3 decimals are identical.

The spelling of 22056681 in words is "twenty-two million, fifty-six thousand, six hundred eighty-one".