28473053 has 4 divisors (see below), whose sum is σ = 32540640. Its totient is φ = 24405468.

The previous prime is 28473043. The next prime is 28473073. The reversal of 28473053 is 35037482.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28473053 - 2⁴ = 28473037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28473043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2033783 + ... + 2033796.

It is an arithmetic number, because the mean of its divisors is an integer number (8135160).

Almost surely, 2^28473053 is an apocalyptic number.

It is an amenable number.

28473053 is a deficient number, since it is larger than the sum of its proper divisors (4067587).

28473053 is an equidigital number, since it uses as much as digits as its factorization.

28473053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067586.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 28473053 is about 5336.0147113740. The cubic root of 28473053 is about 305.3594364974.

It can be divided in two parts, 284 and 73053, that added together give a palindrome (73337).

The spelling of 28473053 in words is "twenty-eight million, four hundred seventy-three thousand, fifty-three".