22628081 has 8 divisors (see below), whose sum is σ = 25893504. Its totient is φ = 19370880.

The previous prime is 22628059. The next prime is 22628101. The reversal of 22628081 is 18082622.

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 22628081 - 2⁶ = 22628017 is a prime.

It is a super-2 number, since 2×22628081² = 1024060099485122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22628051) 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 7 ways as a sum of consecutive naturals, for example, 5921 + ... + 8961.

It is an arithmetic number, because the mean of its divisors is an integer number (3236688).

Almost surely, 2^22628081 is an apocalyptic number.

It is an amenable number.

22628081 is a deficient number, since it is larger than the sum of its proper divisors (3265423).

22628081 is a wasteful number, since it uses less digits than its factorization.

22628081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4111.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 22628081 is about 4756.8982541148. The cubic root of 22628081 is about 282.8454791227.

The spelling of 22628081 in words is "twenty-two million, six hundred twenty-eight thousand, eighty-one".