28264756 has 12 divisors (see below), whose sum is σ = 53268292. Its totient is φ = 13045248.

The previous prime is 28264751. The next prime is 28264757. The reversal of 28264756 is 65746282.

It can be written as a sum of positive squares in 2 ways, for example, as 3920400 + 24344356 = 1980^2 + 4934^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28264751) 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 3 ways as a sum of consecutive naturals, for example, 271725 + ... + 271828.

Almost surely, 2^28264756 is an apocalyptic number.

28264756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28264756 is a deficient number, since it is larger than the sum of its proper divisors (25003536).

28264756 is a wasteful number, since it uses less digits than its factorization.

28264756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543570 (or 543568 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 28264756 is about 5316.4608528607. The cubic root of 28264756 is about 304.6129857897.

The spelling of 28264756 in words is "twenty-eight million, two hundred sixty-four thousand, seven hundred fifty-six".