28001032 has 16 divisors (see below), whose sum is σ = 53783100. Its totient is φ = 13658880.

The previous prime is 28001009. The next prime is 28001047. The reversal of 28001032 is 23010082.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17926756 + 10074276 = 4234^2 + 3174^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28000997 and 28001015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42357 + ... + 43012.

Almost surely, 2^28001032 is an apocalyptic number.

It is an amenable number.

28001032 is a deficient number, since it is larger than the sum of its proper divisors (25782068).

28001032 is a wasteful number, since it uses less digits than its factorization.

28001032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85416 (or 85412 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 28001032 is about 5291.6001360647. The cubic root of 28001032 is about 303.6626278082.

The spelling of 28001032 in words is "twenty-eight million, one thousand, thirty-two".