28341287 has 8 divisors (see below), whose sum is σ = 30564240. Its totient is φ = 26124480.

The previous prime is 28341281. The next prime is 28341317. The reversal of 28341287 is 78214382.

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 28341287 - 2⁸ = 28341031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28341281) 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, 13712 + ... + 15642.

It is an arithmetic number, because the mean of its divisors is an integer number (3820530).

Almost surely, 2^28341287 is an apocalyptic number.

28341287 is a deficient number, since it is larger than the sum of its proper divisors (2222953).

28341287 is a wasteful number, since it uses less digits than its factorization.

28341287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073.

The product of its digits is 21504, while the sum is 35.

The square root of 28341287 is about 5323.6535386894. The cubic root of 28341287 is about 304.8876662372.

The spelling of 28341287 in words is "twenty-eight million, three hundred forty-one thousand, two hundred eighty-seven".