28225758 has 32 divisors (see below), whose sum is σ = 63711360. Its totient is φ = 8257760.

The previous prime is 28225741. The next prime is 28225793. The reversal of 28225758 is 85752282.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5460 + ... + 9287.

It is an arithmetic number, because the mean of its divisors is an integer number (1990980).

Almost surely, 2^28225758 is an apocalyptic number.

28225758 is an abundant number, since it is smaller than the sum of its proper divisors (35485602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28225758 is a wasteful number, since it uses less digits than its factorization.

28225758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14792.

The product of its digits is 89600, while the sum is 39.

The square root of 28225758 is about 5312.7919213912. The cubic root of 28225758 is about 304.4728257867.

The spelling of 28225758 in words is "twenty-eight million, two hundred twenty-five thousand, seven hundred fifty-eight".