22244490 has 32 divisors (see below), whose sum is σ = 59319360. Its totient is φ = 5931792.

The previous prime is 22244477. The next prime is 22244491. The reversal of 22244490 is 9444222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22244491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40924 + ... + 41463.

It is an arithmetic number, because the mean of its divisors is an integer number (1853730).

Almost surely, 2^22244490 is an apocalyptic number.

22244490 is an abundant number, since it is smaller than the sum of its proper divisors (37074870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22244490 is a wasteful number, since it uses less digits than its factorization.

22244490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82403 (or 82397 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 22244490 is about 4716.4064710328. The cubic root of 22244490 is about 281.2380972741.

The spelling of 22244490 in words is "twenty-two million, two hundred forty-four thousand, four hundred ninety".