22323920 has 40 divisors (see below), whose sum is σ = 52235496. Its totient is φ = 8872448.

The previous prime is 22323893. The next prime is 22323943. The reversal of 22323920 is 2932322.

It can be written as a sum of positive squares in 4 ways, for example, as 7639696 + 14684224 = 2764^2 + 3832^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×22323920³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13034 + ... + 14646.

Almost surely, 2^22323920 is an apocalyptic number.

22323920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22323920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26117748).

22323920 is an abundant number, since it is smaller than the sum of its proper divisors (29911576).

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

22323920 is a wasteful number, since it uses less digits than its factorization.

22323920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799 (or 1793 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 22323920 is about 4724.8195732747. The cubic root of 22323920 is about 281.5724453281.

The spelling of 22323920 in words is "twenty-two million, three hundred twenty-three thousand, nine hundred twenty".