28693325 has 24 divisors (see below), whose sum is σ = 38762400. Its totient is φ = 20986560.

The previous prime is 28693319. The next prime is 28693361. The reversal of 28693325 is 52339682.

It is not a de Polignac number, because 28693325 - 2⁴ = 28693309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12734 + ... + 14816.

It is an arithmetic number, because the mean of its divisors is an integer number (1615100).

Almost surely, 2^28693325 is an apocalyptic number.

28693325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28693325 is a deficient number, since it is larger than the sum of its proper divisors (10069075).

28693325 is a wasteful number, since it uses less digits than its factorization.

28693325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141 (or 2136 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 28693325 is about 5356.6150692392. The cubic root of 28693325 is about 306.1448507544.

The spelling of 28693325 in words is "twenty-eight million, six hundred ninety-three thousand, three hundred twenty-five".