28290573 has 16 divisors (see below), whose sum is σ = 43358400. Its totient is φ = 18209520.

The previous prime is 28290571. The next prime is 28290583. The reversal of 28290573 is 37509282.

It is a happy number.

28290573 is a `hidden beast` number, since 2 + 82 + 9 + 0 + 573 = 666.

It is not a de Polignac number, because 28290573 - 2¹ = 28290571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28290571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17283 + ... + 18848.

It is an arithmetic number, because the mean of its divisors is an integer number (2709900).

Almost surely, 2^28290573 is an apocalyptic number.

It is an amenable number.

28290573 is a deficient number, since it is larger than the sum of its proper divisors (15067827).

28290573 is a wasteful number, since it uses less digits than its factorization.

28290573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36169 (or 36163 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 28290573 is about 5318.8883237007. Note that the first 3 decimals coincide. The cubic root of 28290573 is about 304.7057019659.

The spelling of 28290573 in words is "twenty-eight million, two hundred ninety thousand, five hundred seventy-three".