22281590 has 8 divisors (see below), whose sum is σ = 40106880. Its totient is φ = 8912632.

The previous prime is 22281583. The next prime is 22281593. The reversal of 22281590 is 9518222.

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 (22281593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114070 + ... + 1114089.

It is an arithmetic number, because the mean of its divisors is an integer number (5013360).

Almost surely, 2^22281590 is an apocalyptic number.

22281590 is a deficient number, since it is larger than the sum of its proper divisors (17825290).

22281590 is a wasteful number, since it uses less digits than its factorization.

22281590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228166.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 22281590 is about 4720.3379116330. The cubic root of 22281590 is about 281.3943627598.

The spelling of 22281590 in words is "twenty-two million, two hundred eighty-one thousand, five hundred ninety".