28327387 has 8 divisors (see below), whose sum is σ = 31486320. Its totient is φ = 25265760.

The previous prime is 28327361. The next prime is 28327391. The reversal of 28327387 is 78372382.

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 28327387 - 2⁷ = 28327259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28327307) 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, 23712 + ... + 24877.

It is an arithmetic number, because the mean of its divisors is an integer number (3935790).

Almost surely, 2^28327387 is an apocalyptic number.

28327387 is a deficient number, since it is larger than the sum of its proper divisors (3158933).

28327387 is a wasteful number, since it uses less digits than its factorization.

28327387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48653.

The product of its digits is 112896, while the sum is 40.

The square root of 28327387 is about 5322.3478841579. The cubic root of 28327387 is about 304.8378139777.

The spelling of 28327387 in words is "twenty-eight million, three hundred twenty-seven thousand, three hundred eighty-seven".