28332755 has 12 divisors (see below), whose sum is σ = 37371936. Its totient is φ = 20605200.

The previous prime is 28332751. The next prime is 28332847. The reversal of 28332755 is 55723382.

It is not a de Polignac number, because 28332755 - 2² = 28332751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28332751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22811 + ... + 24020.

It is an arithmetic number, because the mean of its divisors is an integer number (3114328).

Almost surely, 2^28332755 is an apocalyptic number.

28332755 is a deficient number, since it is larger than the sum of its proper divisors (9039181).

28332755 is a wasteful number, since it uses less digits than its factorization.

28332755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46858 (or 46847 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The square root of 28332755 is about 5322.8521489893. The cubic root of 28332755 is about 304.8570682072.

It can be divided in two parts, 283327 and 55, that added together give a palindrome (283382).

The spelling of 28332755 in words is "twenty-eight million, three hundred thirty-two thousand, seven hundred fifty-five".