28356453 has 8 divisors (see below), whose sum is σ = 42009600. Its totient is φ = 18904284.

The previous prime is 28356437. The next prime is 28356481. The reversal of 28356453 is 35465382.

It is a happy number.

28356453 is a `hidden beast` number, since 2 + 8 + 3 + 5 + 645 + 3 = 666.

It is not a de Polignac number, because 28356453 - 2⁴ = 28356437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28352453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525093 + ... + 525146.

It is an arithmetic number, because the mean of its divisors is an integer number (5251200).

Almost surely, 2^28356453 is an apocalyptic number.

It is an amenable number.

28356453 is a deficient number, since it is larger than the sum of its proper divisors (13653147).

28356453 is a wasteful number, since it uses less digits than its factorization.

28356453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050248 (or 1050242 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 28356453 is about 5325.0777459113. The cubic root of 28356453 is about 304.9420404064.

The spelling of 28356453 in words is "twenty-eight million, three hundred fifty-six thousand, four hundred fifty-three".