28531675 has 6 divisors (see below), whose sum is σ = 35379308. Its totient is φ = 22825320.

The previous prime is 28531667. The next prime is 28531691. The reversal of 28531675 is 57613582.

It is not a de Polignac number, because 28531675 - 2³ = 28531667 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 570609 + ... + 570658.

Almost surely, 2^28531675 is an apocalyptic number.

28531675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28531675 is a deficient number, since it is larger than the sum of its proper divisors (6847633).

28531675 is a wasteful number, since it uses less digits than its factorization.

28531675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141277 (or 1141272 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 28531675 is about 5341.5049377493. The cubic root of 28531675 is about 305.5688568437.

The spelling of 28531675 in words is "twenty-eight million, five hundred thirty-one thousand, six hundred seventy-five".