28020174 has 128 divisors (see below), whose sum is σ = 75586560. Its totient is φ = 6718464.

The previous prime is 28020169. The next prime is 28020203. The reversal of 28020174 is 47102082.

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, 383802 + ... + 383874.

It is an arithmetic number, because the mean of its divisors is an integer number (590520).

Almost surely, 2^28020174 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28020174, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37793280).

28020174 is an abundant number, since it is smaller than the sum of its proper divisors (47566386).

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

28020174 is a wasteful number, since it uses less digits than its factorization.

28020174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 28020174 is about 5293.4085427067. The cubic root of 28020174 is about 303.7318084247.

The spelling of 28020174 in words is "twenty-eight million, twenty thousand, one hundred seventy-four".