23891322 has 128 divisors (see below), whose sum is σ = 64512000. Its totient is φ = 5842368.

The previous prime is 23891317. The next prime is 23891323. The reversal of 23891322 is 22319832.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23891322.

It is not an unprimeable number, because it can be changed into a prime (23891323) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 508303 + ... + 508349.

It is an arithmetic number, because the mean of its divisors is an integer number (504000).

Almost surely, 2^23891322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23891322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32256000).

23891322 is an abundant number, since it is smaller than the sum of its proper divisors (40620678).

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

23891322 is a wasteful number, since it uses less digits than its factorization.

23891322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 91 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 23891322 is about 4887.8749984017. The cubic root of 23891322 is about 288.0138641088.

The spelling of 23891322 in words is "twenty-three million, eight hundred ninety-one thousand, three hundred twenty-two".