28246864 has 10 divisors (see below), whose sum is σ = 54728330. Its totient is φ = 14123424.

The previous prime is 28246861. The next prime is 28246891. The reversal of 28246864 is 46864282.

It can be written as a sum of positive squares in only one way, i.e., 27123264 + 1123600 = 5208^2 + 1060^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28246861) 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, 882699 + ... + 882730.

It is an arithmetic number, because the mean of its divisors is an integer number (5472833).

Almost surely, 2^28246864 is an apocalyptic number.

It is an amenable number.

28246864 is a deficient number, since it is larger than the sum of its proper divisors (26481466).

28246864 is a wasteful number, since it uses less digits than its factorization.

28246864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765437 (or 1765431 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 28246864 is about 5314.7778881154. Note that the first 3 decimals coincide. The cubic root of 28246864 is about 304.5486974118.

The spelling of 28246864 in words is "twenty-eight million, two hundred forty-six thousand, eight hundred sixty-four".