22657494 has 8 divisors (see below), whose sum is σ = 45315000. Its totient is φ = 7552496.

The previous prime is 22657493. The next prime is 22657499. The reversal of 22657494 is 49475622.

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

22657494 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22657493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888119 + ... + 1888130.

It is an arithmetic number, because the mean of its divisors is an integer number (5664375).

Almost surely, 2^22657494 is an apocalyptic number.

22657494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22657494 is a wasteful number, since it uses less digits than its factorization.

22657494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776254.

The product of its digits is 120960, while the sum is 39.

The square root of 22657494 is about 4759.9888655332. The cubic root of 22657494 is about 282.9679778307.

The spelling of 22657494 in words is "twenty-two million, six hundred fifty-seven thousand, four hundred ninety-four".