28584825 has 24 divisors (see below), whose sum is σ = 47476128. Its totient is φ = 15175680.

The previous prime is 28584823. The next prime is 28584827. The reversal of 28584825 is 52848582.

It is an interprime number because it is at equal distance from previous prime (28584823) and next prime (28584827).

It is not a de Polignac number, because 28584825 - 2¹ = 28584823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28584823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18534 + ... + 20016.

It is an arithmetic number, because the mean of its divisors is an integer number (1978172).

Almost surely, 2^28584825 is an apocalyptic number.

28584825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28584825 is a deficient number, since it is larger than the sum of its proper divisors (18891303).

28584825 is a wasteful number, since it uses less digits than its factorization.

28584825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753 (or 1748 counting only the distinct ones).

The product of its digits is 204800, while the sum is 42.

The square root of 28584825 is about 5346.4778125416. The cubic root of 28584825 is about 305.7584813034.

The spelling of 28584825 in words is "twenty-eight million, five hundred eighty-four thousand, eight hundred twenty-five".