28769575 has 6 divisors (see below), whose sum is σ = 35674304. Its totient is φ = 23015640.

The previous prime is 28769567. The next prime is 28769579. The reversal of 28769575 is 57596782.

It is not a de Polignac number, because 28769575 - 2³ = 28769567 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 (28769579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 575367 + ... + 575416.

Almost surely, 2^28769575 is an apocalyptic number.

28769575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28769575 is a deficient number, since it is larger than the sum of its proper divisors (6904729).

28769575 is a wasteful number, since it uses less digits than its factorization.

28769575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150793 (or 1150788 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 49.

The square root of 28769575 is about 5363.7277149386. The cubic root of 28769575 is about 306.4157952747.

The spelling of 28769575 in words is "twenty-eight million, seven hundred sixty-nine thousand, five hundred seventy-five".