28132276 has 6 divisors (see below), whose sum is σ = 49231490. Its totient is φ = 14066136.

The previous prime is 28132271. The next prime is 28132301. The reversal of 28132276 is 67223182.

It can be written as a sum of positive squares in only one way, i.e., 26255376 + 1876900 = 5124^2 + 1370^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28132271) by changing a digit.

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 as a sum of consecutive naturals, namely, 3516531 + ... + 3516538.

Almost surely, 2^28132276 is an apocalyptic number.

It is an amenable number.

28132276 is a deficient number, since it is larger than the sum of its proper divisors (21099214).

28132276 is a wasteful number, since it uses less digits than its factorization.

28132276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033073 (or 7033071 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 28132276 is about 5303.9868023969. The cubic root of 28132276 is about 304.1363221704.

The spelling of 28132276 in words is "twenty-eight million, one hundred thirty-two thousand, two hundred seventy-six".