22563996 has 48 divisors (see below), whose sum is σ = 64802304. Its totient is φ = 5950656.

The previous prime is 22563991. The next prime is 22563997. The reversal of 22563996 is 69936522.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22563991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9240 + ... + 11423.

It is an arithmetic number, because the mean of its divisors is an integer number (1350048).

Almost surely, 2^22563996 is an apocalyptic number.

22563996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22563996 is an abundant number, since it is smaller than the sum of its proper divisors (42238308).

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

22563996 is a wasteful number, since it uses less digits than its factorization.

22563996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20690 (or 20688 counting only the distinct ones).

The product of its digits is 174960, while the sum is 42.

The square root of 22563996 is about 4750.1574710740. The cubic root of 22563996 is about 282.5782110440.

The spelling of 22563996 in words is "twenty-two million, five hundred sixty-three thousand, nine hundred ninety-six".