23240032220 has 24 divisors (see below), whose sum is σ = 48864279408. Its totient is φ = 9284544000.

The previous prime is 23240032177. The next prime is 23240032247. The reversal of 23240032220 is 2223004232.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23240032192 and 23240032201.

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, 700181 + ... + 732620.

It is an arithmetic number, because the mean of its divisors is an integer number (2036011642).

Almost surely, 2^23240032220 is an apocalyptic number.

23240032220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23240032220 is an abundant number, since it is smaller than the sum of its proper divisors (25624247188).

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

23240032220 is a wasteful number, since it uses less digits than its factorization.

23240032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433621 (or 1433619 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 23240032220 its reverse (2223004232), we get a palindrome (25463036452).

The spelling of 23240032220 in words is "twenty-three billion, two hundred forty million, thirty-two thousand, two hundred twenty".