28107948 has 48 divisors (see below), whose sum is σ = 73866240. Its totient is φ = 8241600.

The previous prime is 28107929. The next prime is 28107971. The reversal of 28107948 is 84970182.

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 15 ways as a sum of consecutive naturals, for example, 658 + ... + 7526.

It is an arithmetic number, because the mean of its divisors is an integer number (1538880).

Almost surely, 2^28107948 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28107948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36933120).

28107948 is an abundant number, since it is smaller than the sum of its proper divisors (45758292).

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

28107948 is a wasteful number, since it uses less digits than its factorization.

28107948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6918 (or 6916 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 28107948 is about 5301.6929371664. The cubic root of 28107948 is about 304.0486273782.

The spelling of 28107948 in words is "twenty-eight million, one hundred seven thousand, nine hundred forty-eight".