28035872 has 12 divisors (see below), whose sum is σ = 55195686. Its totient is φ = 14017920.

The previous prime is 28035851. The next prime is 28035877. The reversal of 28035872 is 27853082.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14167696 + 13868176 = 3764^2 + 3724^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28035877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438029 + ... + 438092.

Almost surely, 2^28035872 is an apocalyptic number.

It is an amenable number.

28035872 is a deficient number, since it is larger than the sum of its proper divisors (27159814).

28035872 is an equidigital number, since it uses as much as digits as its factorization.

28035872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876131 (or 876123 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 28035872 is about 5294.8911225822. The cubic root of 28035872 is about 303.7885186578.

The spelling of 28035872 in words is "twenty-eight million, thirty-five thousand, eight hundred seventy-two".