56281320 has 96 divisors (see below), whose sum is σ = 184504320. Its totient is φ = 14878080.

The previous prime is 56281319. The next prime is 56281327. The reversal of 56281320 is 2318265.

56281320 is a `hidden beast` number, since 5 + 628 + 1 + 32 + 0 = 666.

56281320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (56281327) 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 23 ways as a sum of consecutive naturals, for example, 45105 + ... + 46335.

It is an arithmetic number, because the mean of its divisors is an integer number (1921920).

Almost surely, 2^56281320 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 56281320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92252160).

56281320 is an abundant number, since it is smaller than the sum of its proper divisors (128223000).

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

56281320 is a wasteful number, since it uses less digits than its factorization.

56281320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 56281320 is about 7502.0877094313. The cubic root of 56281320 is about 383.2258165175.

Adding to 56281320 its reverse (2318265), we get a palindrome (58599585).

The spelling of 56281320 in words is "fifty-six million, two hundred eighty-one thousand, three hundred twenty".