28465275 has 24 divisors (see below), whose sum is σ = 48215664. Its totient is φ = 14809600.

The previous prime is 28465267. The next prime is 28465277. The reversal of 28465275 is 57256482.

It is not a de Polignac number, because 28465275 - 2³ = 28465267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28465277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1554 + ... + 7703.

It is an arithmetic number, because the mean of its divisors is an integer number (2008986).

Almost surely, 2^28465275 is an apocalyptic number.

28465275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28465275 is a deficient number, since it is larger than the sum of its proper divisors (19750389).

28465275 is a wasteful number, since it uses less digits than its factorization.

28465275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9311 (or 9306 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 28465275 is about 5335.2858405150. The cubic root of 28465275 is about 305.3316288951.

The spelling of 28465275 in words is "twenty-eight million, four hundred sixty-five thousand, two hundred seventy-five".