28317894 has 32 divisors (see below), whose sum is σ = 61979904. Its totient is φ = 8554080.

The previous prime is 28317881. The next prime is 28317907. The reversal of 28317894 is 49871382.

It is an interprime number because it is at equal distance from previous prime (28317881) and next prime (28317907).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32772 + ... + 33624.

It is an arithmetic number, because the mean of its divisors is an integer number (1936872).

Almost surely, 2^28317894 is an apocalyptic number.

28317894 is an abundant number, since it is smaller than the sum of its proper divisors (33662010).

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

28317894 is a wasteful number, since it uses less digits than its factorization.

28317894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its digits is 96768, while the sum is 42.

The square root of 28317894 is about 5321.4560037644. The cubic root of 28317894 is about 304.8037580223.

The spelling of 28317894 in words is "twenty-eight million, three hundred seventeen thousand, eight hundred ninety-four".