28074894 has 16 divisors (see below), whose sum is σ = 59105280. Its totient is φ = 8865720.

The previous prime is 28074883. The next prime is 28074901. The reversal of 28074894 is 49847082.

It is a super-2 number, since 2×28074894² = 1576399346222472, which contains 22 as substring.

It is a congruent number.

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, 123022 + ... + 123249.

It is an arithmetic number, because the mean of its divisors is an integer number (3694080).

Almost surely, 2^28074894 is an apocalyptic number.

28074894 is an abundant number, since it is smaller than the sum of its proper divisors (31030386).

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

28074894 is a wasteful number, since it uses less digits than its factorization.

28074894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246295.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 28074894 is about 5298.5747140151. The cubic root of 28074894 is about 303.9293969811.

The spelling of 28074894 in words is "twenty-eight million, seventy-four thousand, eight hundred ninety-four".