28340056 has 8 divisors (see below), whose sum is σ = 53137620. Its totient is φ = 14170024.

The previous prime is 28340041. The next prime is 28340069. The reversal of 28340056 is 65004382.

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

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1771246 + ... + 1771261.

Almost surely, 2^28340056 is an apocalyptic number.

It is an amenable number.

28340056 is a deficient number, since it is larger than the sum of its proper divisors (24797564).

28340056 is a wasteful number, since it uses less digits than its factorization.

28340056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542513 (or 3542509 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 28340056 is about 5323.5379213452. The cubic root of 28340056 is about 304.8832519217.

The spelling of 28340056 in words is "twenty-eight million, three hundred forty thousand, fifty-six".