22904378 has 16 divisors (see below), whose sum is σ = 39416064. Its totient is φ = 9778320.

The previous prime is 22904377. The next prime is 22904393. The reversal of 22904378 is 87340922.

It is a super-2 number, since 2×22904378² = 1049221063133768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22904377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776 + ... + 6812.

It is an arithmetic number, because the mean of its divisors is an integer number (2463504).

Almost surely, 2^22904378 is an apocalyptic number.

22904378 is a deficient number, since it is larger than the sum of its proper divisors (16511686).

22904378 is a wasteful number, since it uses less digits than its factorization.

22904378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 22904378 is about 4785.8518572977. The cubic root of 22904378 is about 283.9920400467.

The spelling of 22904378 in words is "twenty-two million, nine hundred four thousand, three hundred seventy-eight".