22404290 has 16 divisors (see below), whose sum is σ = 41266368. Its totient is φ = 8753136.

The previous prime is 22404281. The next prime is 22404299. The reversal of 22404290 is 9240422.

It is an interprime number because it is at equal distance from previous prime (22404281) and next prime (22404299).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22404299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25622 + ... + 26481.

It is an arithmetic number, because the mean of its divisors is an integer number (2579148).

Almost surely, 2^22404290 is an apocalyptic number.

22404290 is a deficient number, since it is larger than the sum of its proper divisors (18862078).

22404290 is a wasteful number, since it uses less digits than its factorization.

22404290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52153.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22404290 is about 4733.3170187512. The cubic root of 22404290 is about 281.9099439146.

The spelling of 22404290 in words is "twenty-two million, four hundred four thousand, two hundred ninety".