28132708 has 6 divisors (see below), whose sum is σ = 49232246. Its totient is φ = 14066352.

The previous prime is 28132661. The next prime is 28132721. The reversal of 28132708 is 80723182.

It can be written as a sum of positive squares in only one way, i.e., 27793984 + 338724 = 5272^2 + 582^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28132708.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3516585 + ... + 3516592.

Almost surely, 2^28132708 is an apocalyptic number.

It is an amenable number.

28132708 is a deficient number, since it is larger than the sum of its proper divisors (21099538).

28132708 is a wasteful number, since it uses less digits than its factorization.

28132708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033181 (or 7033179 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 28132708 is about 5304.0275263237. The cubic root of 28132708 is about 304.1378789377.

The spelling of 28132708 in words is "twenty-eight million, one hundred thirty-two thousand, seven hundred eight".