23421972 has 48 divisors (see below), whose sum is σ = 63649152. Its totient is φ = 6564480.

The previous prime is 23421961. The next prime is 23421989. The reversal of 23421972 is 27912432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1822 + ... + 7082.

It is an arithmetic number, because the mean of its divisors is an integer number (1326024).

Almost surely, 2^23421972 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 23421972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31824576).

23421972 is an abundant number, since it is smaller than the sum of its proper divisors (40227180).

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

23421972 is a wasteful number, since it uses less digits than its factorization.

23421972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5328 (or 5326 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 23421972 is about 4839.6251920991. The cubic root of 23421972 is about 286.1153462394.

The spelling of 23421972 in words is "twenty-three million, four hundred twenty-one thousand, nine hundred seventy-two".