28343636 has 24 divisors (see below), whose sum is σ = 52061184. Its totient is φ = 13476320.

The previous prime is 28343633. The next prime is 28343647. The reversal of 28343636 is 63634382.

It is a junction number, because it is equal to n+sod(n) for n = 28343596 and 28343605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28343633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16766 + ... + 18378.

It is an arithmetic number, because the mean of its divisors is an integer number (2169216).

Almost surely, 2^28343636 is an apocalyptic number.

It is an amenable number.

28343636 is a deficient number, since it is larger than the sum of its proper divisors (23717548).

28343636 is a wasteful number, since it uses less digits than its factorization.

28343636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831 (or 1829 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 28343636 is about 5323.8741532835. The cubic root of 28343636 is about 304.8960893003.

The spelling of 28343636 in words is "twenty-eight million, three hundred forty-three thousand, six hundred thirty-six".