28170846 has 48 divisors (see below), whose sum is σ = 67532400. Its totient is φ = 8415360.

The previous prime is 28170833. The next prime is 28170869. The reversal of 28170846 is 64807182.

It is a self number, because there is not a number n which added to its sum of digits gives 28170846.

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, 13480 + ... + 15428.

It is an arithmetic number, because the mean of its divisors is an integer number (1406925).

Almost surely, 2^28170846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28170846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33766200).

28170846 is an abundant number, since it is smaller than the sum of its proper divisors (39361554).

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

28170846 is a wasteful number, since it uses less digits than its factorization.

28170846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2038 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 28170846 is about 5307.6215011999. The cubic root of 28170846 is about 304.2752513382.

The spelling of 28170846 in words is "twenty-eight million, one hundred seventy thousand, eight hundred forty-six".