22818404 has 12 divisors (see below), whose sum is σ = 45636864. Its totient is φ = 9779304.

The previous prime is 22818401. The next prime is 22818407. The reversal of 22818404 is 40481822.

It is an interprime number because it is at equal distance from previous prime (22818401) and next prime (22818407).

22818404 is an admirable number.

It is a super-2 number, since 2×22818404² = 1041359122214432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22818401) 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, 407444 + ... + 407499.

It is an arithmetic number, because the mean of its divisors is an integer number (3803072).

Almost surely, 2^22818404 is an apocalyptic number.

It is an amenable number.

22818404 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.

22818404 is a wasteful number, since it uses less digits than its factorization.

22818404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814954 (or 814952 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 22818404 is about 4776.8613126194. The cubic root of 22818404 is about 283.6362631617.

The spelling of 22818404 in words is "twenty-two million, eight hundred eighteen thousand, four hundred four".