23223002440 has 96 divisors (see below), whose sum is σ = 57848616000. Its totient is φ = 8383731840.

The previous prime is 23223002437. The next prime is 23223002447. The reversal of 23223002440 is 4420032232.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (23223002447) 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, 655501 + ... + 690019.

It is an arithmetic number, because the mean of its divisors is an integer number (602589750).

Almost surely, 2^23223002440 is an apocalyptic number.

23223002440 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 23223002440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28924308000).

23223002440 is an abundant number, since it is smaller than the sum of its proper divisors (34625613560).

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

23223002440 is a wasteful number, since it uses less digits than its factorization.

23223002440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34691 (or 34676 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 23223002440 its reverse (4420032232), we get a palindrome (27643034672).

The spelling of 23223002440 in words is "twenty-three billion, two hundred twenty-three million, two thousand, four hundred forty".