28342771 has 4 divisors (see below), whose sum is σ = 28461600. Its totient is φ = 28223944.

The previous prime is 28342759. The next prime is 28342781. The reversal of 28342771 is 17724382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28342771 - 2²³ = 19954163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28342781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59056 + ... + 59533.

It is an arithmetic number, because the mean of its divisors is an integer number (7115400).

Almost surely, 2^28342771 is an apocalyptic number.

28342771 is a deficient number, since it is larger than the sum of its proper divisors (118829).

28342771 is a wasteful number, since it uses less digits than its factorization.

28342771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118828.

The product of its digits is 18816, while the sum is 34.

The square root of 28342771 is about 5323.7929148306. The cubic root of 28342771 is about 304.8929876305.

The spelling of 28342771 in words is "twenty-eight million, three hundred forty-two thousand, seven hundred seventy-one".