28336825 has 12 divisors (see below), whose sum is σ = 38332368. Its totient is φ = 20608400.

The previous prime is 28336793. The next prime is 28336831. The reversal of 28336825 is 52863382.

It is not a de Polignac number, because 28336825 - 2⁵ = 28336793 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, 51247 + ... + 51796.

It is an arithmetic number, because the mean of its divisors is an integer number (3194364).

Almost surely, 2^28336825 is an apocalyptic number.

28336825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28336825 is a deficient number, since it is larger than the sum of its proper divisors (9995543).

28336825 is a wasteful number, since it uses less digits than its factorization.

28336825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103064 (or 103059 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 28336825 is about 5323.2344490920. The cubic root of 28336825 is about 304.8716650800.

It can be divided in two parts, 28336 and 825, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 28336825 in words is "twenty-eight million, three hundred thirty-six thousand, eight hundred twenty-five".