28001327 has 8 divisors (see below), whose sum is σ = 30227040. Its totient is φ = 25859680.

The previous prime is 28001321. The next prime is 28001353. The reversal of 28001327 is 72310082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28001327 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28001321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20324 + ... + 21657.

It is an arithmetic number, because the mean of its divisors is an integer number (3778380).

Almost surely, 2^28001327 is an apocalyptic number.

28001327 is a deficient number, since it is larger than the sum of its proper divisors (2225713).

28001327 is a wasteful number, since it uses less digits than its factorization.

28001327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42033.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 28001327 is about 5291.6280103575. The cubic root of 28001327 is about 303.6636941994.

The spelling of 28001327 in words is "twenty-eight million, one thousand, three hundred twenty-seven".