28512453 has 8 divisors (see below), whose sum is σ = 38584288. Its totient is φ = 18724464.

The previous prime is 28512439. The next prime is 28512487. The reversal of 28512453 is 35421582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28512453 - 2²⁴ = 11735237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28512453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28512403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70726 + ... + 71127.

It is an arithmetic number, because the mean of its divisors is an integer number (4823036).

Almost surely, 2^28512453 is an apocalyptic number.

It is an amenable number.

28512453 is a deficient number, since it is larger than the sum of its proper divisors (10071835).

28512453 is a wasteful number, since it uses less digits than its factorization.

28512453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141923.

The product of its digits is 9600, while the sum is 30.

The square root of 28512453 is about 5339.7053289484. The cubic root of 28512453 is about 305.5002200964.

The spelling of 28512453 in words is "twenty-eight million, five hundred twelve thousand, four hundred fifty-three".