23147320 has 96 divisors (see below), whose sum is σ = 63093600. Its totient is φ = 7485696.

The previous prime is 23147317. The next prime is 23147321. The reversal of 23147320 is 2374132.

It is a junction number, because it is equal to n+sod(n) for n = 23147291 and 23147300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23147321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100966 + ... + 101194.

It is an arithmetic number, because the mean of its divisors is an integer number (657225).

Almost surely, 2^23147320 is an apocalyptic number.

23147320 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 23147320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31546800).

23147320 is an abundant number, since it is smaller than the sum of its proper divisors (39946280).

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

23147320 is a wasteful number, since it uses less digits than its factorization.

23147320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 23147320 is about 4811.1661787970. The cubic root of 23147320 is about 284.9925924001.

The spelling of 23147320 in words is "twenty-three million, one hundred forty-seven thousand, three hundred twenty".