28825730 has 16 divisors (see below), whose sum is σ = 51984504. Its totient is φ = 11508480.

The previous prime is 28825723. The next prime is 28825789. The reversal of 28825730 is 3752882.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28121809 + 703921 = 5303^2 + 839^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3500 + ... + 8360.

Almost surely, 2^28825730 is an apocalyptic number.

28825730 is a deficient number, since it is larger than the sum of its proper divisors (23158774).

28825730 is a wasteful number, since it uses less digits than its factorization.

28825730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5461.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 28825730 is about 5368.9598620217. The cubic root of 28825730 is about 306.6150288501.

The spelling of 28825730 in words is "twenty-eight million, eight hundred twenty-five thousand, seven hundred thirty".