28936744 has 8 divisors (see below), whose sum is σ = 54256410. Its totient is φ = 14468368.

The previous prime is 28936741. The next prime is 28936763. The reversal of 28936744 is 44763982.

It can be written as a sum of positive squares in only one way, i.e., 22372900 + 6563844 = 4730^2 + 2562^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28936744.

It is not an unprimeable number, because it can be changed into a prime (28936741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1808539 + ... + 1808554.

Almost surely, 2^28936744 is an apocalyptic number.

It is an amenable number.

28936744 is a deficient number, since it is larger than the sum of its proper divisors (25319666).

28936744 is a wasteful number, since it uses less digits than its factorization.

28936744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617099 (or 3617095 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 28936744 is about 5379.2884287794. The cubic root of 28936744 is about 307.0081378017.

The spelling of 28936744 in words is "twenty-eight million, nine hundred thirty-six thousand, seven hundred forty-four".