28387103 has 8 divisors (see below), whose sum is σ = 30096000. Its totient is φ = 26727840.

The previous prime is 28387097. The next prime is 28387111. The reversal of 28387103 is 30178382.

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 28387103 - 2⁴ = 28387087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28387103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28387133) 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, 11228 + ... + 13521.

It is an arithmetic number, because the mean of its divisors is an integer number (3762000).

Almost surely, 2^28387103 is an apocalyptic number.

28387103 is a deficient number, since it is larger than the sum of its proper divisors (1708897).

28387103 is a wasteful number, since it uses less digits than its factorization.

28387103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24817.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28387103 is about 5327.9548609199. The cubic root of 28387103 is about 305.0518697056.

The spelling of 28387103 in words is "twenty-eight million, three hundred eighty-seven thousand, one hundred three".