23489136 has 80 divisors (see below), whose sum is σ = 73566720. Its totient is φ = 7116480.

The previous prime is 23489131. The next prime is 23489171. The reversal of 23489136 is 63198432.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 23489136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23489131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2281 + ... + 7223.

It is an arithmetic number, because the mean of its divisors is an integer number (919584).

Almost surely, 2^23489136 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 23489136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36783360).

23489136 is an abundant number, since it is smaller than the sum of its proper divisors (50077584).

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

23489136 is a wasteful number, since it uses less digits than its factorization.

23489136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971 (or 4959 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 23489136 is about 4846.5591918391. The cubic root of 23489136 is about 286.3885699172.

The spelling of 23489136 in words is "twenty-three million, four hundred eighty-nine thousand, one hundred thirty-six".