22004312 has 16 divisors (see below), whose sum is σ = 45009000. Its totient is φ = 10001920.

The previous prime is 22004303. The next prime is 22004321. The reversal of 22004312 is 21340022.

It is an interprime number because it is at equal distance from previous prime (22004303) and next prime (22004321).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124937 + ... + 125112.

Almost surely, 2^22004312 is an apocalyptic number.

22004312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22004312 is an abundant number, since it is smaller than the sum of its proper divisors (23004688).

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

22004312 is a wasteful number, since it uses less digits than its factorization.

22004312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250066 (or 250062 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22004312 is about 4690.8753980467. The cubic root of 22004312 is about 280.2222385266. Note that the first 4 decimals are identical.

Adding to 22004312 its reverse (21340022), we get a palindrome (43344334).

It can be divided in two parts, 2200 and 4312, that multiplied together give a square (9486400 = 3080²).

The spelling of 22004312 in words is "twenty-two million, four thousand, three hundred twelve".