28245716 has 6 divisors (see below), whose sum is σ = 49430010. Its totient is φ = 14122856.

The previous prime is 28245703. The next prime is 28245727. The reversal of 28245716 is 61754282.

It can be written as a sum of positive squares in only one way, i.e., 23001616 + 5244100 = 4796^2 + 2290^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3530711 + ... + 3530718.

It is an arithmetic number, because the mean of its divisors is an integer number (8238335).

Almost surely, 2^28245716 is an apocalyptic number.

It is an amenable number.

28245716 is a deficient number, since it is larger than the sum of its proper divisors (21184294).

28245716 is a wasteful number, since it uses less digits than its factorization.

28245716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7061433 (or 7061431 counting only the distinct ones).

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

The square root of 28245716 is about 5314.6698862676. The cubic root of 28245716 is about 304.5445715657.

Adding to 28245716 its reverse (61754282), we get a palindrome (89999998).

The spelling of 28245716 in words is "twenty-eight million, two hundred forty-five thousand, seven hundred sixteen".