28561259 has 8 divisors (see below), whose sum is σ = 29606160. Its totient is φ = 27520416.

The previous prime is 28561249. The next prime is 28561271. The reversal of 28561259 is 95216582.

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

It is a cyclic number.

It is not a de Polignac number, because 28561259 - 2⁴ = 28561243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28561219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24872 + ... + 25994.

It is an arithmetic number, because the mean of its divisors is an integer number (3700770).

Almost surely, 2^28561259 is an apocalyptic number.

28561259 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28561259 is a deficient number, since it is larger than the sum of its proper divisors (1044901).

28561259 is a wasteful number, since it uses less digits than its factorization.

28561259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029.

The product of its digits is 43200, while the sum is 38.

The square root of 28561259 is about 5344.2734772839. The cubic root of 28561259 is about 305.6744333816.

The spelling of 28561259 in words is "twenty-eight million, five hundred sixty-one thousand, two hundred fifty-nine".