28140192 has 72 divisors (see below), whose sum is σ = 80589600. Its totient is φ = 9313920.

The previous prime is 28140187. The next prime is 28140199. The reversal of 28140192 is 29104182.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (28140199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57067 + ... + 57557.

It is an arithmetic number, because the mean of its divisors is an integer number (1119300).

Almost surely, 2^28140192 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 28140192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40294800).

28140192 is an abundant number, since it is smaller than the sum of its proper divisors (52449408).

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

28140192 is a wasteful number, since it uses less digits than its factorization.

28140192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 28140192 is about 5304.7329810274. The cubic root of 28140192 is about 304.1648459598.

The spelling of 28140192 in words is "twenty-eight million, one hundred forty thousand, one hundred ninety-two".