28798475 has 12 divisors (see below), whose sum is σ = 35787144. Its totient is φ = 22989120.

The previous prime is 28798463. The next prime is 28798487. The reversal of 28798475 is 57489782.

It is an interprime number because it is at equal distance from previous prime (28798463) and next prime (28798487).

It is not a de Polignac number, because 28798475 - 2⁸ = 28798219 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, 14492 + ... + 16358.

It is an arithmetic number, because the mean of its divisors is an integer number (2982262).

Almost surely, 2^28798475 is an apocalyptic number.

28798475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28798475 is a deficient number, since it is larger than the sum of its proper divisors (6988669).

28798475 is a wasteful number, since it uses less digits than its factorization.

28798475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494 (or 2489 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 50.

The square root of 28798475 is about 5366.4210606325. The cubic root of 28798475 is about 306.5183625754.

The spelling of 28798475 in words is "twenty-eight million, seven hundred ninety-eight thousand, four hundred seventy-five".