23170885920 has 1344 divisors, whose sum is σ = 105503005440. Its totient is φ = 4676050944.

The previous prime is 23170885897. The next prime is 23170885921. The reversal of 23170885920 is 2958807132.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (23170885921) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 392726851 + ... + 392726909.

It is an arithmetic number, because the mean of its divisors is an integer number (78499260).

Almost surely, 2^23170885920 is an apocalyptic number.

23170885920 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 23170885920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52751502720).

23170885920 is an abundant number, since it is smaller than the sum of its proper divisors (82332119520).

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

23170885920 is a wasteful number, since it uses less digits than its factorization.

23170885920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 23170885920 in words is "twenty-three billion, one hundred seventy million, eight hundred eighty-five thousand, nine hundred twenty".