28652575 has 12 divisors (see below), whose sum is σ = 40605040. Its totient is φ = 19647360.

The previous prime is 28652557. The next prime is 28652579. The reversal of 28652575 is 57525682.

It is not a de Polignac number, because 28652575 - 2⁷ = 28652447 is a prime.

It is a hoax number, since the sum of its digits (40) 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 (28652579) 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, 81690 + ... + 82039.

Almost surely, 2^28652575 is an apocalyptic number.

28652575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28652575 is a deficient number, since it is larger than the sum of its proper divisors (11952465).

28652575 is a wasteful number, since it uses less digits than its factorization.

28652575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163746 (or 163741 counting only the distinct ones).

The product of its digits is 168000, while the sum is 40.

The square root of 28652575 is about 5352.8100097052. The cubic root of 28652575 is about 305.9998540447. Note that the first 3 decimals are identical.

The spelling of 28652575 in words is "twenty-eight million, six hundred fifty-two thousand, five hundred seventy-five".