22454390 has 32 divisors (see below), whose sum is σ = 48625920. Its totient is φ = 7293024.

The previous prime is 22454387. The next prime is 22454431. The reversal of 22454390 is 9345422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7112 + ... + 9771.

It is an arithmetic number, because the mean of its divisors is an integer number (1519560).

Almost surely, 2^22454390 is an apocalyptic number.

22454390 is an abundant number, since it is smaller than the sum of its proper divisors (26171530).

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

22454390 is a wasteful number, since it uses less digits than its factorization.

22454390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16916.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 22454390 is about 4738.6063352003. The cubic root of 22454390 is about 282.1199211637.

The spelling of 22454390 in words is "twenty-two million, four hundred fifty-four thousand, three hundred ninety".