23319478272 has 136 divisors (see below), whose sum is σ = 65852167536. Its totient is φ = 7314866176.

The previous prime is 23319478271. The next prime is 23319478331. The reversal of 23319478272 is 27287491332.

It is a tau number, because it is divible by the number of its divisors (136).

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

It is not an unprimeable number, because it can be changed into a prime (23319478271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3338848 + ... + 3345824.

Almost surely, 2^23319478272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23319478272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32926083768).

23319478272 is an abundant number, since it is smaller than the sum of its proper divisors (42532689264).

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

23319478272 is an frugal number, since it uses more digits than its factorization.

23319478272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7029 (or 6999 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The spelling of 23319478272 in words is "twenty-three billion, three hundred nineteen million, four hundred seventy-eight thousand, two hundred seventy-two".