28117674 has 48 divisors (see below), whose sum is σ = 66280032. Its totient is φ = 8563104.

The previous prime is 28117627. The next prime is 28117699. The reversal of 28117674 is 47671182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24477 + ... + 25599.

It is an arithmetic number, because the mean of its divisors is an integer number (1380834).

Almost surely, 2^28117674 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28117674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33140016).

28117674 is an abundant number, since it is smaller than the sum of its proper divisors (38162358).

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

28117674 is a wasteful number, since it uses less digits than its factorization.

28117674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1248 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 28117674 is about 5302.6101120109. The cubic root of 28117674 is about 304.0836926194.

It can be divided in two parts, 281 and 17674, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 28117674 in words is "twenty-eight million, one hundred seventeen thousand, six hundred seventy-four".