28692825 has 96 divisors (see below), whose sum is σ = 58662912. Its totient is φ = 12096000.

The previous prime is 28692823. The next prime is 28692827. The reversal of 28692825 is 52829682.

It is an interprime number because it is at equal distance from previous prime (28692823) and next prime (28692827).

It is not a de Polignac number, because 28692825 - 2¹ = 28692823 is a prime.

Its product of digits (138240) is a multiple of the sum of its prime factors (135).

It is not an unprimeable number, because it can be changed into a prime (28692823) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 667254 + ... + 667296.

It is an arithmetic number, because the mean of its divisors is an integer number (611072).

Almost surely, 2^28692825 is an apocalyptic number.

28692825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28692825 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

28692825 is a wasteful number, since it uses less digits than its factorization.

28692825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 130 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 28692825 is about 5356.5683977711. The cubic root of 28692825 is about 306.1430724858.

The spelling of 28692825 in words is "twenty-eight million, six hundred ninety-two thousand, eight hundred twenty-five".