28248074 has 4 divisors (see below), whose sum is σ = 42372114. Its totient is φ = 14124036.

The previous prime is 28248043. The next prime is 28248083. The reversal of 28248074 is 47084282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23377225 + 4870849 = 4835^2 + 2207^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7062017 + ... + 7062020.

Almost surely, 2^28248074 is an apocalyptic number.

28248074 is a deficient number, since it is larger than the sum of its proper divisors (14124040).

28248074 is a wasteful number, since it uses less digits than its factorization.

28248074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14124039.

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 28248074 is about 5314.8917204398. The cubic root of 28248074 is about 304.5530459613.

The spelling of 28248074 in words is "twenty-eight million, two hundred forty-eight thousand, seventy-four".