56223828 has 96 divisors (see below), whose sum is σ = 156280320. Its totient is φ = 17418240.

The previous prime is 56223803. The next prime is 56223857. The reversal of 56223828 is 82832265.

56223828 is a `hidden beast` number, since 5 + 622 + 3 + 8 + 28 = 666.

56223828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56223828² = 6322237669947168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 56223792 and 56223801.

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 31 ways as a sum of consecutive naturals, for example, 207333 + ... + 207603.

It is an arithmetic number, because the mean of its divisors is an integer number (1627920).

Almost surely, 2^56223828 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 56223828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78140160).

56223828 is an abundant number, since it is smaller than the sum of its proper divisors (100056492).

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

56223828 is a wasteful number, since it uses less digits than its factorization.

56223828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 406 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 56223828 is about 7498.2549969976. The cubic root of 56223828 is about 383.0952822359.

The spelling of 56223828 in words is "fifty-six million, two hundred twenty-three thousand, eight hundred twenty-eight".