28327901 has 16 divisors (see below), whose sum is σ = 33031680. Its totient is φ = 23794560.

The previous prime is 28327889. The next prime is 28327909. The reversal of 28327901 is 10972382.

28327901 = 385² + 386² + ... + 521².

It is a cyclic number.

It is not a de Polignac number, because 28327901 - 2⁶ = 28327837 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 (28327909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104396 + ... + 104666.

It is an arithmetic number, because the mean of its divisors is an integer number (2064480).

Almost surely, 2^28327901 is an apocalyptic number.

It is an amenable number.

28327901 is a deficient number, since it is larger than the sum of its proper divisors (4703779).

28327901 is a wasteful number, since it uses less digits than its factorization.

28327901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 28327901 is about 5322.3961708990. The cubic root of 28327901 is about 304.8396577257.

The spelling of 28327901 in words is "twenty-eight million, three hundred twenty-seven thousand, nine hundred one".