22449378 has 32 divisors (see below), whose sum is σ = 51486336. Its totient is φ = 6392448.

The previous prime is 22449377. The next prime is 22449379. The reversal of 22449378 is 87394422.

It is an interprime number because it is at equal distance from previous prime (22449377) and next prime (22449379).

It is not an unprimeable number, because it can be changed into a prime (22449377) 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, 14950 + ... + 16382.

It is an arithmetic number, because the mean of its divisors is an integer number (1608948).

Almost surely, 2^22449378 is an apocalyptic number.

22449378 is an abundant number, since it is smaller than the sum of its proper divisors (29036958).

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

22449378 is a wasteful number, since it uses less digits than its factorization.

22449378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818.

The product of its digits is 96768, while the sum is 39.

The square root of 22449378 is about 4738.0774582102. The cubic root of 22449378 is about 282.0989291252.

The spelling of 22449378 in words is "twenty-two million, four hundred forty-nine thousand, three hundred seventy-eight".