28752575 has 6 divisors (see below), whose sum is σ = 35653224. Its totient is φ = 23002040.

The previous prime is 28752569. The next prime is 28752587. The reversal of 28752575 is 57525782.

It is not a de Polignac number, because 28752575 - 2¹⁰ = 28751551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 575027 + ... + 575076.

It is an arithmetic number, because the mean of its divisors is an integer number (5942204).

Almost surely, 2^28752575 is an apocalyptic number.

28752575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28752575 is a deficient number, since it is larger than the sum of its proper divisors (6900649).

28752575 is a wasteful number, since it uses less digits than its factorization.

28752575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150113 (or 1150108 counting only the distinct ones).

The product of its digits is 196000, while the sum is 41.

The square root of 28752575 is about 5362.1427619936. The cubic root of 28752575 is about 306.3554294789.

The spelling of 28752575 in words is "twenty-eight million, seven hundred fifty-two thousand, five hundred seventy-five".