28825390 has 16 divisors (see below), whose sum is σ = 56602800. Its totient is φ = 10481920.

The previous prime is 28825339. The next prime is 28825397. The reversal of 28825390 is 9352882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28825397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130915 + ... + 131134.

It is an arithmetic number, because the mean of its divisors is an integer number (3537675).

Almost surely, 2^28825390 is an apocalyptic number.

28825390 is a deficient number, since it is larger than the sum of its proper divisors (27777410).

28825390 is a wasteful number, since it uses less digits than its factorization.

28825390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262067.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 28825390 is about 5368.9281984396. The cubic root of 28825390 is about 306.6138233355.

The spelling of 28825390 in words is "twenty-eight million, eight hundred twenty-five thousand, three hundred ninety".