28064132 has 12 divisors (see below), whose sum is σ = 49161756. Its totient is φ = 14017920.

The previous prime is 28064111. The next prime is 28064171. The reversal of 28064132 is 23146082.

It can be written as a sum of positive squares in 2 ways, for example, as 19219456 + 8844676 = 4384^2 + 2974^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1832 + ... + 7712.

It is an arithmetic number, because the mean of its divisors is an integer number (4096813).

Almost surely, 2^28064132 is an apocalyptic number.

It is an amenable number.

28064132 is a deficient number, since it is larger than the sum of its proper divisors (21097624).

28064132 is a wasteful number, since it uses less digits than its factorization.

28064132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7078 (or 7076 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 28064132 is about 5297.5590605485. The cubic root of 28064132 is about 303.8905567490.

The spelling of 28064132 in words is "twenty-eight million, sixty-four thousand, one hundred thirty-two".