28371245 has 32 divisors (see below), whose sum is σ = 40435200. Its totient is φ = 19098240.

The previous prime is 28371241. The next prime is 28371263. The reversal of 28371245 is 54217382.

It is not a de Polignac number, because 28371245 - 2² = 28371241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28371241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121649 + ... + 121881.

It is an arithmetic number, because the mean of its divisors is an integer number (1263600).

Almost surely, 2^28371245 is an apocalyptic number.

It is an amenable number.

28371245 is a deficient number, since it is larger than the sum of its proper divisors (12063955).

28371245 is an equidigital number, since it uses as much as digits as its factorization.

28371245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 316 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 28371245 is about 5326.4664647400. The cubic root of 28371245 is about 304.9950550125.

The spelling of 28371245 in words is "twenty-eight million, three hundred seventy-one thousand, two hundred forty-five".