28966275 has 48 divisors (see below), whose sum is σ = 57322720. Its totient is φ = 14256000.

The previous prime is 28966247. The next prime is 28966297. The reversal of 28966275 is 57266982.

It is not a de Polignac number, because 28966275 - 2¹⁴ = 28949891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28966275.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7125 + ... + 10425.

Almost surely, 2^28966275 is an apocalyptic number.

28966275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28966275 is a deficient number, since it is larger than the sum of its proper divisors (28356445).

28966275 is a wasteful number, since it uses less digits than its factorization.

28966275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333 (or 3322 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 28966275 is about 5382.0326085969. The cubic root of 28966275 is about 307.1125399523.

It can be divided in two parts, 28966 and 275, that added together give a square (29241 = 171²).

The spelling of 28966275 in words is "twenty-eight million, nine hundred sixty-six thousand, two hundred seventy-five".