23542728 has 80 divisors (see below), whose sum is σ = 65708400. Its totient is φ = 7027680.

The previous prime is 23542721. The next prime is 23542763. The reversal of 23542728 is 82724532.

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

Its product of digits (26880) is a multiple of the sum of its prime factors (120).

It is not an unprimeable number, because it can be changed into a prime (23542721) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 351351 + ... + 351417.

It is an arithmetic number, because the mean of its divisors is an integer number (821355).

Almost surely, 2^23542728 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 23542728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32854200).

23542728 is an abundant number, since it is smaller than the sum of its proper divisors (42165672).

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

23542728 is an equidigital number, since it uses as much as digits as its factorization.

23542728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 83 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 23542728 is about 4852.0849126947. The cubic root of 23542728 is about 286.6062092324.

It can be divided in two parts, 235427 and 28, that multiplied together give a palindrome (6591956).

The spelling of 23542728 in words is "twenty-three million, five hundred forty-two thousand, seven hundred twenty-eight".