28394160 has 80 divisors (see below), whose sum is σ = 88622304. Its totient is φ = 7520256.

The previous prime is 28394159. The next prime is 28394183. The reversal of 28394160 is 6149382.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 46014 + ... + 46626.

Almost surely, 2^28394160 is an apocalyptic number.

28394160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28394160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44311152).

28394160 is an abundant number, since it is smaller than the sum of its proper divisors (60228144).

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

28394160 is a wasteful number, since it uses less digits than its factorization.

28394160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 28394160 is about 5328.6170813824. The cubic root of 28394160 is about 305.0771461216.

The spelling of 28394160 in words is "twenty-eight million, three hundred ninety-four thousand, one hundred sixty".