28803925 has 6 divisors (see below), whose sum is σ = 35716898. Its totient is φ = 23043120.

The previous prime is 28803917. The next prime is 28803941. The reversal of 28803925 is 52930882.

It can be written as a sum of positive squares in 3 ways, for example, as 320356 + 28483569 = 566^2 + 5337^2 .

It is not a de Polignac number, because 28803925 - 2³ = 28803917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 576054 + ... + 576103.

Almost surely, 2^28803925 is an apocalyptic number.

28803925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28803925 is a deficient number, since it is larger than the sum of its proper divisors (6912973).

28803925 is a wasteful number, since it uses less digits than its factorization.

28803925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152167 (or 1152162 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 28803925 is about 5366.9288238247. The cubic root of 28803925 is about 306.5376971606.

The spelling of 28803925 in words is "twenty-eight million, eight hundred three thousand, nine hundred twenty-five".