28774170 has 128 divisors (see below), whose sum is σ = 82944000. Its totient is φ = 7076160.

The previous prime is 28774157. The next prime is 28774201. The reversal of 28774170 is 7147782.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 364191 + ... + 364269.

It is an arithmetic number, because the mean of its divisors is an integer number (648000).

Almost surely, 2^28774170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28774170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41472000).

28774170 is an abundant number, since it is smaller than the sum of its proper divisors (54169830).

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

28774170 is a wasteful number, since it uses less digits than its factorization.

28774170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 28774170 is about 5364.1560379989. The cubic root of 28774170 is about 306.4321077116.

The spelling of 28774170 in words is "twenty-eight million, seven hundred seventy-four thousand, one hundred seventy".