23220552240 has 120 divisors (see below), whose sum is σ = 78073003008. Its totient is φ = 6184949760.

The previous prime is 23220552227. The next prime is 23220552247. The reversal of 23220552240 is 4225502232.

23220552240 is a `hidden beast` number, since 232 + 205 + 5 + 224 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (23220552247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 616017 + ... + 652623.

Almost surely, 2^23220552240 is an apocalyptic number.

23220552240 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 23220552240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39036501504).

23220552240 is an abundant number, since it is smaller than the sum of its proper divisors (54852450768).

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

23220552240 is a wasteful number, since it uses less digits than its factorization.

23220552240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37507 (or 37498 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The spelling of 23220552240 in words is "twenty-three billion, two hundred twenty million, five hundred fifty-two thousand, two hundred forty".