28559901 has 8 divisors (see below), whose sum is σ = 38105280. Its totient is φ = 19027232.

The previous prime is 28559899. The next prime is 28559911. The reversal of 28559901 is 10995582.

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 28559901 - 2¹ = 28559899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28559901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28559911) 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, 5305 + ... + 9233.

It is an arithmetic number, because the mean of its divisors is an integer number (4763160).

Almost surely, 2^28559901 is an apocalyptic number.

It is an amenable number.

28559901 is a deficient number, since it is larger than the sum of its proper divisors (9545379).

28559901 is a wasteful number, since it uses less digits than its factorization.

28559901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6355.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 28559901 is about 5344.1464238922. The cubic root of 28559901 is about 305.6695886785.

The spelling of 28559901 in words is "twenty-eight million, five hundred fifty-nine thousand, nine hundred one".