28849375 has 20 divisors (see below), whose sum is σ = 37238080. Its totient is φ = 22320000.

The previous prime is 28849369. The next prime is 28849433. The reversal of 28849375 is 57394882.

It is not a de Polignac number, because 28849375 - 2³ = 28849367 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18631 + ... + 20119.

It is an arithmetic number, because the mean of its divisors is an integer number (1861904).

Almost surely, 2^28849375 is an apocalyptic number.

28849375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28849375 is a deficient number, since it is larger than the sum of its proper divisors (8388705).

28849375 is an equidigital number, since it uses as much as digits as its factorization.

28849375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540 (or 1525 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 28849375 is about 5371.1614200283. The cubic root of 28849375 is about 306.6988420609.

The spelling of 28849375 in words is "twenty-eight million, eight hundred forty-nine thousand, three hundred seventy-five".