28075275 has 24 divisors (see below), whose sum is σ = 51576560. Its totient is φ = 14973120.

The previous prime is 28075253. The next prime is 28075291. The reversal of 28075275 is 57257082.

It is not a de Polignac number, because 28075275 - 2⁹ = 28074763 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20122 + ... + 21471.

Almost surely, 2^28075275 is an apocalyptic number.

28075275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28075275 is a deficient number, since it is larger than the sum of its proper divisors (23501285).

28075275 is a wasteful number, since it uses less digits than its factorization.

28075275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41612 (or 41601 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 28075275 is about 5298.6106669579. The cubic root of 28075275 is about 303.9307718344.

The spelling of 28075275 in words is "twenty-eight million, seventy-five thousand, two hundred seventy-five".