28153275 has 48 divisors (see below), whose sum is σ = 50139648. Its totient is φ = 13888000.

The previous prime is 28153273. The next prime is 28153289. The reversal of 28153275 is 57235182.

It is not a de Polignac number, because 28153275 - 2¹ = 28153273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28153273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90370 + ... + 90680.

It is an arithmetic number, because the mean of its divisors is an integer number (1044576).

Almost surely, 2^28153275 is an apocalyptic number.

28153275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28153275 is a deficient number, since it is larger than the sum of its proper divisors (21986373).

28153275 is a wasteful number, since it uses less digits than its factorization.

28153275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 407 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 28153275 is about 5305.9659817982. The cubic root of 28153275 is about 304.2119763198.

The spelling of 28153275 in words is "twenty-eight million, one hundred fifty-three thousand, two hundred seventy-five".