23003501240 has 64 divisors (see below), whose sum is σ = 52475212800. Its totient is φ = 9074153088.

The previous prime is 23003501233. The next prime is 23003501243. The reversal of 23003501240 is 4210530032.

It is a happy number.

It is a super-2 number, since 2×23003501240² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23003501243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2988677 + ... + 2996363.

It is an arithmetic number, because the mean of its divisors is an integer number (819925200).

Almost surely, 2^23003501240 is an apocalyptic number.

23003501240 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 23003501240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26237606400).

23003501240 is an abundant number, since it is smaller than the sum of its proper divisors (29471711560).

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

23003501240 is a wasteful number, since it uses less digits than its factorization.

23003501240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8724 (or 8720 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The spelling of 23003501240 in words is "twenty-three billion, three million, five hundred one thousand, two hundred forty".