20223264 has 24 divisors (see below), whose sum is σ = 53086320. Its totient is φ = 6741056.

The previous prime is 20223257. The next prime is 20223283. The reversal of 20223264 is 46232202.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20223264.

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, 105234 + ... + 105425.

It is an arithmetic number, because the mean of its divisors is an integer number (2211930).

Almost surely, 2^20223264 is an apocalyptic number.

20223264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20223264 is an abundant number, since it is smaller than the sum of its proper divisors (32863056).

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

20223264 is a wasteful number, since it uses less digits than its factorization.

20223264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210672 (or 210664 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20223264 is about 4497.0283521454. The cubic root of 20223264 is about 272.4480792138.

Adding to 20223264 its reverse (46232202), we get a palindrome (66455466).

The spelling of 20223264 in words is "twenty million, two hundred twenty-three thousand, two hundred sixty-four".