28849575 has 24 divisors (see below), whose sum is σ = 48149200. Its totient is φ = 15240960.

The previous prime is 28849573. The next prime is 28849591. The reversal of 28849575 is 57594882.

It is not a de Polignac number, because 28849575 - 2¹ = 28849573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28849571) 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, 6411 + ... + 9939.

Almost surely, 2^28849575 is an apocalyptic number.

28849575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28849575 is a deficient number, since it is larger than the sum of its proper divisors (19299625).

28849575 is a wasteful number, since it uses less digits than its factorization.

28849575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651 (or 3646 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The square root of 28849575 is about 5371.1800379432. The cubic root of 28849575 is about 306.6995507953.

The spelling of 28849575 in words is "twenty-eight million, eight hundred forty-nine thousand, five hundred seventy-five".