28914553 has 12 divisors (see below), whose sum is σ = 30264948. Its totient is φ = 27605760.

The previous prime is 28914551. The next prime is 28914559. The reversal of 28914553 is 35541982.

It can be written as a sum of positive squares in 2 ways, for example, as 898704 + 28015849 = 948^2 + 5293^2 .

It is not a de Polignac number, because 28914553 - 2¹ = 28914551 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 (28914551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255825 + ... + 255937.

It is an arithmetic number, because the mean of its divisors is an integer number (2522079).

Almost surely, 2^28914553 is an apocalyptic number.

It is an amenable number.

28914553 is a deficient number, since it is larger than the sum of its proper divisors (1350395).

28914553 is an equidigital number, since it uses as much as digits as its factorization.

28914553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 233 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 28914553 is about 5377.2253997764. The cubic root of 28914553 is about 306.9296383010.

The spelling of 28914553 in words is "twenty-eight million, nine hundred fourteen thousand, five hundred fifty-three".