28281746 has 8 divisors (see below), whose sum is σ = 42476400. Its totient is φ = 14122948.

The previous prime is 28281739. The next prime is 28281749. The reversal of 28281746 is 64718282.

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

It is not an unprimeable number, because it can be changed into a prime (28281749) 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, 6896 + ... + 10203.

It is an arithmetic number, because the mean of its divisors is an integer number (5309550).

Almost surely, 2^28281746 is an apocalyptic number.

28281746 is a deficient number, since it is larger than the sum of its proper divisors (14194654).

28281746 is a wasteful number, since it uses less digits than its factorization.

28281746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17928.

The product of its digits is 43008, while the sum is 38.

The square root of 28281746 is about 5318.0584803103. The cubic root of 28281746 is about 304.6740080513.

It can be divided in two parts, 282 and 81746, that added together give a palindrome (82028).

The spelling of 28281746 in words is "twenty-eight million, two hundred eighty-one thousand, seven hundred forty-six".