28233616 has 20 divisors (see below), whose sum is σ = 55207900. Its totient is φ = 13986432.

The previous prime is 28233613. The next prime is 28233629. The reversal of 28233616 is 61633282.

It can be written as a sum of positive squares in 2 ways, for example, as 16646400 + 11587216 = 4080^2 + 3404^2 .

It is not an unprimeable number, because it can be changed into a prime (28233613) 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, 6351 + ... + 9838.

It is an arithmetic number, because the mean of its divisors is an integer number (2760395).

Almost surely, 2^28233616 is an apocalyptic number.

It is an amenable number.

28233616 is a deficient number, since it is larger than the sum of its proper divisors (26974284).

28233616 is a wasteful number, since it uses less digits than its factorization.

28233616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16306 (or 16300 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 28233616 is about 5313.5314057602. The cubic root of 28233616 is about 304.5010780599.

Adding to 28233616 its reverse (61633282), we get a palindrome (89866898).

The spelling of 28233616 in words is "twenty-eight million, two hundred thirty-three thousand, six hundred sixteen".