28049553 has 24 divisors (see below), whose sum is σ = 47294208. Its totient is φ = 15685632.

The previous prime is 28049551. The next prime is 28049563. The reversal of 28049553 is 35594082.

It is not a de Polignac number, because 28049553 - 2¹ = 28049551 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28049551) 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, 1776 + ... + 7697.

It is an arithmetic number, because the mean of its divisors is an integer number (1970592).

Almost surely, 2^28049553 is an apocalyptic number.

It is an amenable number.

28049553 is a deficient number, since it is larger than the sum of its proper divisors (19244655).

28049553 is a wasteful number, since it uses less digits than its factorization.

28049553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533 (or 9530 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 28049553 is about 5296.1828707098. The cubic root of 28049553 is about 303.8379250620.

The spelling of 28049553 in words is "twenty-eight million, forty-nine thousand, five hundred fifty-three".