28587575 has 12 divisors (see below), whose sum is σ = 35518560. Its totient is φ = 22824960.

The previous prime is 28587563. The next prime is 28587577. The reversal of 28587575 is 57578582.

It is not a de Polignac number, because 28587575 - 2¹² = 28583479 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28587577) 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, 18482 + ... + 19968.

It is an arithmetic number, because the mean of its divisors is an integer number (2959880).

Almost surely, 2^28587575 is an apocalyptic number.

28587575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28587575 is a deficient number, since it is larger than the sum of its proper divisors (6930985).

28587575 is a wasteful number, since it uses less digits than its factorization.

28587575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2261 counting only the distinct ones).

The product of its digits is 784000, while the sum is 47.

The square root of 28587575 is about 5346.7349850166. The cubic root of 28587575 is about 305.7682861429.

The spelling of 28587575 in words is "twenty-eight million, five hundred eighty-seven thousand, five hundred seventy-five".