22628555 has 8 divisors (see below), whose sum is σ = 28090800. Its totient is φ = 17478496.

The previous prime is 22628533. The next prime is 22628579. The reversal of 22628555 is 55582622.

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 22628555 - 2⁸ = 22628299 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77885 + ... + 78174.

It is an arithmetic number, because the mean of its divisors is an integer number (3511350).

Almost surely, 2^22628555 is an apocalyptic number.

22628555 is a deficient number, since it is larger than the sum of its proper divisors (5462245).

22628555 is a wasteful number, since it uses less digits than its factorization.

22628555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156093.

The product of its digits is 48000, while the sum is 35.

The square root of 22628555 is about 4756.9480762354. The cubic root of 22628555 is about 282.8474540703.

The spelling of 22628555 in words is "twenty-two million, six hundred twenty-eight thousand, five hundred fifty-five".