23220530520 has 128 divisors (see below), whose sum is σ = 80464803840. Its totient is φ = 5298083840.

The previous prime is 23220530519. The next prime is 23220530659. The reversal of 23220530520 is 2503502232.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 494952 + ... + 539831.

It is an arithmetic number, because the mean of its divisors is an integer number (628631280).

Almost surely, 2^23220530520 is an apocalyptic number.

23220530520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23220530520 is an abundant number, since it is smaller than the sum of its proper divisors (57244273320).

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

23220530520 is a wasteful number, since it uses less digits than its factorization.

23220530520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034825 (or 1034821 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The spelling of 23220530520 in words is "twenty-three billion, two hundred twenty million, five hundred thirty thousand, five hundred twenty".