28127946 has 64 divisors (see below), whose sum is σ = 70917120. Its totient is φ = 7224960.

The previous prime is 28127933. The next prime is 28127951. The reversal of 28127946 is 64972182.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49150 + ... + 49718.

It is an arithmetic number, because the mean of its divisors is an integer number (1108080).

Almost surely, 2^28127946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28127946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35458560).

28127946 is an abundant number, since it is smaller than the sum of its proper divisors (42789174).

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

28127946 is a wasteful number, since it uses less digits than its factorization.

28127946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699.

The product of its digits is 48384, while the sum is 39.

The square root of 28127946 is about 5303.5786031698. The cubic root of 28127946 is about 304.1207175810.

The spelling of 28127946 in words is "twenty-eight million, one hundred twenty-seven thousand, nine hundred forty-six".