23047489920 has 768 divisors, whose sum is σ = 92822284800. Its totient is φ = 4761649152.

The previous prime is 23047489909. The next prime is 23047489931. The reversal of 23047489920 is 2998474032.

It is an interprime number because it is at equal distance from previous prime (23047489909) and next prime (23047489931).

It is a super-2 number, since 2×23047489920² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 23047489920.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 165809211 + ... + 165809349.

It is an arithmetic number, because the mean of its divisors is an integer number (120862350).

Almost surely, 2^23047489920 is an apocalyptic number.

23047489920 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 23047489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46411142400).

23047489920 is an abundant number, since it is smaller than the sum of its proper divisors (69774794880).

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

23047489920 is a wasteful number, since it uses less digits than its factorization.

23047489920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 23047489920 in words is "twenty-three billion, forty-seven million, four hundred eighty-nine thousand, nine hundred twenty".