28579970 has 16 divisors (see below), whose sum is σ = 51955128. Its totient is φ = 11318400.

The previous prime is 28579963. The next prime is 28579987. The reversal of 28579970 is 7997582.

It can be written as a sum of positive squares in 4 ways, for example, as 24098281 + 4481689 = 4909^2 + 2117^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13139 + ... + 15158.

Almost surely, 2^28579970 is an apocalyptic number.

28579970 is a deficient number, since it is larger than the sum of its proper divisors (23375158).

28579970 is a wasteful number, since it uses less digits than its factorization.

28579970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28405.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 28579970 is about 5346.0237560265. The cubic root of 28579970 is about 305.7411697698.

The spelling of 28579970 in words is "twenty-eight million, five hundred seventy-nine thousand, nine hundred seventy".