28367825 has 12 divisors (see below), whose sum is σ = 35278620. Its totient is φ = 22628160.

The previous prime is 28367819. The next prime is 28367827. The reversal of 28367825 is 52876382.

It can be written as a sum of positive squares in 6 ways, for example, as 246016 + 28121809 = 496^2 + 5303^2 .

It is not a de Polignac number, because 28367825 - 2⁶ = 28367761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28367827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8267 + ... + 11183.

It is an arithmetic number, because the mean of its divisors is an integer number (2939885).

Almost surely, 2^28367825 is an apocalyptic number.

28367825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28367825 is a deficient number, since it is larger than the sum of its proper divisors (6910795).

28367825 is a wasteful number, since it uses less digits than its factorization.

28367825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316 (or 3311 counting only the distinct ones).

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

The square root of 28367825 is about 5326.1454167155. The cubic root of 28367825 is about 304.9827993525.

It can be divided in two parts, 28367 and 825, that added together give a palindrome (29192).

The spelling of 28367825 in words is "twenty-eight million, three hundred sixty-seven thousand, eight hundred twenty-five".