28072559 has 8 divisors (see below), whose sum is σ = 29782368. Its totient is φ = 26369280.

The previous prime is 28072549. The next prime is 28072567. The reversal of 28072559 is 95527082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28072559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28072549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9419 + ... + 12035.

It is an arithmetic number, because the mean of its divisors is an integer number (3722796).

Almost surely, 2^28072559 is an apocalyptic number.

28072559 is a deficient number, since it is larger than the sum of its proper divisors (1709809).

28072559 is a wasteful number, since it uses less digits than its factorization.

28072559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 28072559 is about 5298.3543671597. The cubic root of 28072559 is about 303.9209707716.

The spelling of 28072559 in words is "twenty-eight million, seventy-two thousand, five hundred fifty-nine".