28492475 has 18 divisors (see below), whose sum is σ = 38838660. Its totient is φ = 20719600.

The previous prime is 28492447. The next prime is 28492483. The reversal of 28492475 is 57429482.

It is not a de Polignac number, because 28492475 - 2¹⁶ = 28426939 is a prime.

It is a super-2 number, since 2×28492475² = 1623642263251250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1685 + ... + 7734.

Almost surely, 2^28492475 is an apocalyptic number.

28492475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28492475 is a deficient number, since it is larger than the sum of its proper divisors (10346185).

28492475 is a wasteful number, since it uses less digits than its factorization.

28492475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9451 (or 9435 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 28492475 is about 5337.8342986646. The cubic root of 28492475 is about 305.4288511706.

The spelling of 28492475 in words is "twenty-eight million, four hundred ninety-two thousand, four hundred seventy-five".