28282766 has 4 divisors (see below), whose sum is σ = 42424152. Its totient is φ = 14141382.

The previous prime is 28282741. The next prime is 28282817. The reversal of 28282766 is 66728282.

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

It is a super-2 number, since 2×28282766² = 1599829705221512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7070690 + ... + 7070693.

It is an arithmetic number, because the mean of its divisors is an integer number (10606038).

Almost surely, 2^28282766 is an apocalyptic number.

28282766 is a deficient number, since it is larger than the sum of its proper divisors (14141386).

28282766 is a wasteful number, since it uses less digits than its factorization.

28282766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14141385.

The product of its digits is 129024, while the sum is 41.

The square root of 28282766 is about 5318.1543791056. The cubic root of 28282766 is about 304.6776707642.

It can be divided in two parts, 2828276 and 6, that added together give a palindrome (2828282).

The spelling of 28282766 in words is "twenty-eight million, two hundred eighty-two thousand, seven hundred sixty-six".