23286872440 has 64 divisors (see below), whose sum is σ = 56483078400. Its totient is φ = 8589514752.

The previous prime is 23286872419. The next prime is 23286872443. The reversal of 23286872440 is 4427868232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23286872443) 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, 502489 + ... + 546871.

It is an arithmetic number, because the mean of its divisors is an integer number (882548100).

Almost surely, 2^23286872440 is an apocalyptic number.

23286872440 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 23286872440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28241539200).

23286872440 is an abundant number, since it is smaller than the sum of its proper divisors (33196205960).

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

23286872440 is a wasteful number, since it uses less digits than its factorization.

23286872440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45416 (or 45412 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 46.

The spelling of 23286872440 in words is "twenty-three billion, two hundred eighty-six million, eight hundred seventy-two thousand, four hundred forty".