23033136 has 80 divisors (see below), whose sum is σ = 69440000. Its totient is φ = 6576192.

The previous prime is 23033119. The next prime is 23033137. The reversal of 23033136 is 63133032.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (23033137) 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, 15765 + ... + 17163.

It is an arithmetic number, because the mean of its divisors is an integer number (868000).

Almost surely, 2^23033136 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 23033136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34720000).

23033136 is an abundant number, since it is smaller than the sum of its proper divisors (46406864).

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

23033136 is a wasteful number, since it uses less digits than its factorization.

23033136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1411 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 23033136 is about 4799.2849467395. The cubic root of 23033136 is about 284.5232040114.

Adding to 23033136 its reverse (63133032), we get a palindrome (86166168).

The spelling of 23033136 in words is "twenty-three million, thirty-three thousand, one hundred thirty-six".