28242758 has 16 divisors (see below), whose sum is σ = 44396640. Its totient is φ = 13449216.

The previous prime is 28242743. The next prime is 28242761. The reversal of 28242758 is 85724282.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10628 + ... + 13016.

It is an arithmetic number, because the mean of its divisors is an integer number (2774790).

Almost surely, 2^28242758 is an apocalyptic number.

28242758 is a deficient number, since it is larger than the sum of its proper divisors (16153882).

28242758 is a wasteful number, since it uses less digits than its factorization.

28242758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671.

The product of its digits is 71680, while the sum is 38.

The square root of 28242758 is about 5314.3915926473. The cubic root of 28242758 is about 304.5339401683.

The spelling of 28242758 in words is "twenty-eight million, two hundred forty-two thousand, seven hundred fifty-eight".