22906081 has 8 divisors (see below), whose sum is σ = 25058304. Its totient is φ = 20765520.

The previous prime is 22906073. The next prime is 22906087. The reversal of 22906081 is 18060922.

It is a happy number.

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 22906081 - 2³ = 22906073 is a prime.

It is a super-2 number, since 2×22906081² = 1049377093557122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22906087) 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, 1495 + ... + 6931.

It is an arithmetic number, because the mean of its divisors is an integer number (3132288).

Almost surely, 2^22906081 is an apocalyptic number.

It is an amenable number.

22906081 is a deficient number, since it is larger than the sum of its proper divisors (2152223).

22906081 is a wasteful number, since it uses less digits than its factorization.

22906081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5831.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 22906081 is about 4786.0297742492. The cubic root of 22906081 is about 283.9990783875. Note that the first 3 decimals are identical.

The spelling of 22906081 in words is "twenty-two million, nine hundred six thousand, eighty-one".