28312894 has 16 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 13800184.

The previous prime is 28312891. The next prime is 28312901. The reversal of 28312894 is 49821382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28312891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33327 + ... + 34165.

It is an arithmetic number, because the mean of its divisors is an integer number (2721600).

Almost surely, 2^28312894 is an apocalyptic number.

28312894 is a deficient number, since it is larger than the sum of its proper divisors (15232706).

28312894 is a wasteful number, since it uses less digits than its factorization.

28312894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247.

The product of its digits is 27648, while the sum is 37.

The square root of 28312894 is about 5320.9861867891. The cubic root of 28312894 is about 304.7858175580.

The spelling of 28312894 in words is "twenty-eight million, three hundred twelve thousand, eight hundred ninety-four".