23645072 has 40 divisors (see below), whose sum is σ = 51341952. Its totient is φ = 10454400.

The previous prime is 23645071. The next prime is 23645077. The reversal of 23645072 is 27054632.

It is not an unprimeable number, because it can be changed into a prime (23645071) 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 7 ways as a sum of consecutive naturals, for example, 4697 + ... + 8327.

Almost surely, 2^23645072 is an apocalyptic number.

23645072 is a gapful number since it is divisible by the number (22) 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 23645072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25670976).

23645072 is an abundant number, since it is smaller than the sum of its proper divisors (27696880).

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

23645072 is a wasteful number, since it uses less digits than its factorization.

23645072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 23645072 is about 4862.6198699878. The cubic root of 23645072 is about 287.0209165394.

The spelling of 23645072 in words is "twenty-three million, six hundred forty-five thousand, seventy-two".