28055356 has 12 divisors (see below), whose sum is σ = 56110768. Its totient is φ = 12023712.

The previous prime is 28055333. The next prime is 28055387. The reversal of 28055356 is 65355082.

It is a happy number.

28055356 is an admirable number.

It is a hoax number, since the sum of its digits (34) 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 in 3 ways as a sum of consecutive naturals, for example, 500961 + ... + 501016.

Almost surely, 2^28055356 is an apocalyptic number.

It is an amenable number.

28055356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28055356 is a wasteful number, since it uses less digits than its factorization.

28055356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001988 (or 1001986 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 28055356 is about 5296.7306897746. The cubic root of 28055356 is about 303.8588766722.

The spelling of 28055356 in words is "twenty-eight million, fifty-five thousand, three hundred fifty-six".