28384746 has 64 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 8150976.

The previous prime is 28384721. The next prime is 28384753. The reversal of 28384746 is 64748382.

It is a junction number, because it is equal to n+sod(n) for n = 28384698 and 28384707.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158485 + ... + 158663.

It is an arithmetic number, because the mean of its divisors is an integer number (1020600).

Almost surely, 2^28384746 is an apocalyptic number.

28384746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28384746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32659200).

28384746 is an abundant number, since it is smaller than the sum of its proper divisors (36933654).

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

28384746 is a wasteful number, since it uses less digits than its factorization.

28384746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its digits is 258048, while the sum is 42.

The square root of 28384746 is about 5327.7336645144. The cubic root of 28384746 is about 305.0434265855.

The spelling of 28384746 in words is "twenty-eight million, three hundred eighty-four thousand, seven hundred forty-six".