23240211220 has 24 divisors (see below), whose sum is σ = 49994797608. Its totient is φ = 9069350400.

The previous prime is 23240211167. The next prime is 23240211221. The reversal of 23240211220 is 2211204232.

It can be written as a sum of positive squares in 4 ways, for example, as 1806080004 + 21434131216 = 42498^2 + 146404^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240211221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14170041 + ... + 14171680.

It is an arithmetic number, because the mean of its divisors is an integer number (2083116567).

Almost surely, 2^23240211220 is an apocalyptic number.

23240211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23240211220 is an abundant number, since it is smaller than the sum of its proper divisors (26754586388).

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

23240211220 is a wasteful number, since it uses less digits than its factorization.

23240211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28341771 (or 28341769 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 23240211220 its reverse (2211204232), we get a palindrome (25451415452).

The spelling of 23240211220 in words is "twenty-three billion, two hundred forty million, two hundred eleven thousand, two hundred twenty".