28598825 has 6 divisors (see below), whose sum is σ = 35462574. Its totient is φ = 22879040.

The previous prime is 28598809. The next prime is 28598849. The reversal of 28598825 is 52889582.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5683456 + 22915369 = 2384^2 + 4787^2 .

It is not a de Polignac number, because 28598825 - 2⁴ = 28598809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28598825.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 571952 + ... + 572001.

It is an arithmetic number, because the mean of its divisors is an integer number (5910429).

Almost surely, 2^28598825 is an apocalyptic number.

28598825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28598825 is a deficient number, since it is larger than the sum of its proper divisors (6863749).

28598825 is a wasteful number, since it uses less digits than its factorization.

28598825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143963 (or 1143958 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The square root of 28598825 is about 5347.7869254487. The cubic root of 28598825 is about 305.8083903033.

The spelling of 28598825 in words is "twenty-eight million, five hundred ninety-eight thousand, eight hundred twenty-five".