28024894 has 16 divisors (see below), whose sum is σ = 43713936. Its totient is φ = 13464000.

The previous prime is 28024889. The next prime is 28024937. The reversal of 28024894 is 49842082.

It is a super-2 number, since 2×28024894² = 1570789367422472, 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, 2944 + ... + 8044.

It is an arithmetic number, because the mean of its divisors is an integer number (2732121).

Almost surely, 2^28024894 is an apocalyptic number.

28024894 is a deficient number, since it is larger than the sum of its proper divisors (15689042).

28024894 is a wasteful number, since it uses less digits than its factorization.

28024894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5211.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 28024894 is about 5293.8543614270. The cubic root of 28024894 is about 303.7488620143.

The spelling of 28024894 in words is "twenty-eight million, twenty-four thousand, eight hundred ninety-four".