23136828 has 96 divisors (see below), whose sum is σ = 64538880. Its totient is φ = 6359040.

The previous prime is 23136823. The next prime is 23136829. The reversal of 23136828 is 82863132.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23136821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166383 + ... + 166521.

It is an arithmetic number, because the mean of its divisors is an integer number (672280).

Almost surely, 2^23136828 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 23136828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32269440).

23136828 is an abundant number, since it is smaller than the sum of its proper divisors (41402052).

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

23136828 is a wasteful number, since it uses less digits than its factorization.

23136828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 265 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 23136828 is about 4810.0756750804. The cubic root of 23136828 is about 284.9495263032.

The spelling of 23136828 in words is "twenty-three million, one hundred thirty-six thousand, eight hundred twenty-eight".