28024970 has 8 divisors (see below), whose sum is σ = 50444964. Its totient is φ = 11209984.

The previous prime is 28024967. The next prime is 28024987. The reversal of 28024970 is 7942082.

It can be written as a sum of positive squares in 2 ways, for example, as 26327161 + 1697809 = 5131^2 + 1303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1401239 + ... + 1401258.

Almost surely, 2^28024970 is an apocalyptic number.

28024970 is a deficient number, since it is larger than the sum of its proper divisors (22419994).

28024970 is a wasteful number, since it uses less digits than its factorization.

28024970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802504.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28024970 is about 5293.8615395569. The cubic root of 28024970 is about 303.7491365903.

The spelling of 28024970 in words is "twenty-eight million, twenty-four thousand, nine hundred seventy".