28693056 has 112 divisors (see below), whose sum is σ = 89261696. Its totient is φ = 7962624.

The previous prime is 28693043. The next prime is 28693081. The reversal of 28693056 is 65039682.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 49440 + ... + 50016.

Almost surely, 2^28693056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28693056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44630848).

28693056 is an abundant number, since it is smaller than the sum of its proper divisors (60568640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28693056 is a wasteful number, since it uses less digits than its factorization.

28693056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 28693056 is about 5356.5899600399. The cubic root of 28693056 is about 306.1438940485.

The spelling of 28693056 in words is "twenty-eight million, six hundred ninety-three thousand, fifty-six".