28292475 has 24 divisors (see below), whose sum is σ = 47271280. Its totient is φ = 14929920.

The previous prime is 28292443. The next prime is 28292483. The reversal of 28292475 is 57429282.

It is not a de Polignac number, because 28292475 - 2⁵ = 28292443 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, 5331 + ... + 9219.

Almost surely, 2^28292475 is an apocalyptic number.

28292475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28292475 is a deficient number, since it is larger than the sum of its proper divisors (18978805).

28292475 is a wasteful number, since it uses less digits than its factorization.

28292475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999 (or 3994 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 28292475 is about 5319.0671174558. The cubic root of 28292475 is about 304.7125303566.

The spelling of 28292475 in words is "twenty-eight million, two hundred ninety-two thousand, four hundred seventy-five".