23003728 has 40 divisors (see below), whose sum is σ = 50309280. Its totient is φ = 10093440.

The previous prime is 23003719. The next prime is 23003759. The reversal of 23003728 is 82730032.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2851 + ... + 7357.

It is an arithmetic number, because the mean of its divisors is an integer number (1257732).

Almost surely, 2^23003728 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 23003728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25154640).

23003728 is an abundant number, since it is smaller than the sum of its proper divisors (27305552).

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

23003728 is a wasteful number, since it uses less digits than its factorization.

23003728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555 (or 4549 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 23003728 is about 4796.2201784322. The cubic root of 23003728 is about 284.4020622799.

The spelling of 23003728 in words is "twenty-three million, three thousand, seven hundred twenty-eight".