22552990 has 8 divisors (see below), whose sum is σ = 40595400. Its totient is φ = 9021192.

The previous prime is 22552987. The next prime is 22552991. The reversal of 22552990 is 9925522.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22552991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127640 + ... + 1127659.

It is an arithmetic number, because the mean of its divisors is an integer number (5074425).

Almost surely, 2^22552990 is an apocalyptic number.

22552990 is a deficient number, since it is larger than the sum of its proper divisors (18042410).

22552990 is a wasteful number, since it uses less digits than its factorization.

22552990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255306.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 22552990 is about 4748.9988418613. The cubic root of 22552990 is about 282.5322593490.

The spelling of 22552990 in words is "twenty-two million, five hundred fifty-two thousand, nine hundred ninety".