28023453 has 24 divisors (see below), whose sum is σ = 42469440. Its totient is φ = 17772480.

The previous prime is 28023431. The next prime is 28023469. The reversal of 28023453 is 35432082.

It is not a de Polignac number, because 28023453 - 2⁸ = 28023197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28023403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68313 + ... + 68721.

It is an arithmetic number, because the mean of its divisors is an integer number (1769560).

Almost surely, 2^28023453 is an apocalyptic number.

28023453 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28023453 is a deficient number, since it is larger than the sum of its proper divisors (14445987).

28023453 is a wasteful number, since it uses less digits than its factorization.

28023453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 28023453 is about 5293.7182584645. The cubic root of 28023453 is about 303.7436558143.

The spelling of 28023453 in words is "twenty-eight million, twenty-three thousand, four hundred fifty-three".