28019282 has 4 divisors (see below), whose sum is σ = 42028926. Its totient is φ = 14009640.

The previous prime is 28019279. The next prime is 28019293. The reversal of 28019282 is 28291082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27888961 + 130321 = 5281^2 + 361^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7004819 + ... + 7004822.

Almost surely, 2^28019282 is an apocalyptic number.

28019282 is a deficient number, since it is larger than the sum of its proper divisors (14009644).

28019282 is a wasteful number, since it uses less digits than its factorization.

28019282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14009643.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 28019282 is about 5293.3242863063. The cubic root of 28019282 is about 303.7285853701.

The spelling of 28019282 in words is "twenty-eight million, nineteen thousand, two hundred eighty-two".