28127704 has 32 divisors (see below), whose sum is σ = 58242240. Its totient is φ = 12628000.

The previous prime is 28127699. The next prime is 28127717. The reversal of 28127704 is 40772182.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5379 + ... + 9229.

It is an arithmetic number, because the mean of its divisors is an integer number (1820070).

Almost surely, 2^28127704 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 28127704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29121120).

28127704 is an abundant number, since it is smaller than the sum of its proper divisors (30114536).

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

28127704 is a wasteful number, since it uses less digits than its factorization.

28127704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951 (or 3947 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 28127704 is about 5303.5557883367. Note that the first 3 decimals coincide. The cubic root of 28127704 is about 304.1198454066.

Adding to 28127704 its reverse (40772182), we get a palindrome (68899886).

The spelling of 28127704 in words is "twenty-eight million, one hundred twenty-seven thousand, seven hundred four".