28812475 has 12 divisors (see below), whose sum is σ = 35794584. Its totient is φ = 23006720.

The previous prime is 28812437. The next prime is 28812503. The reversal of 28812475 is 57421882.

It is not a de Polignac number, because 28812475 - 2¹⁷ = 28681403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23067 + ... + 24283.

It is an arithmetic number, because the mean of its divisors is an integer number (2982882).

Almost surely, 2^28812475 is an apocalyptic number.

28812475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28812475 is a deficient number, since it is larger than the sum of its proper divisors (6982109).

28812475 is a wasteful number, since it uses less digits than its factorization.

28812475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174 (or 2169 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 28812475 is about 5367.7253096633. The cubic root of 28812475 is about 306.5680244862.

It can be divided in two parts, 2881 and 2475, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 28812475 in words is "twenty-eight million, eight hundred twelve thousand, four hundred seventy-five".