56281338 has 48 divisors (see below), whose sum is σ = 127431360. Its totient is φ = 18412056.

The previous prime is 56281331. The next prime is 56281343. The reversal of 56281338 is 83318265.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56281331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336931 + ... + 337097.

It is an arithmetic number, because the mean of its divisors is an integer number (2654820).

Almost surely, 2^56281338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56281338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63715680).

56281338 is an abundant number, since it is smaller than the sum of its proper divisors (71150022).

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

56281338 is a wasteful number, since it uses less digits than its factorization.

56281338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 251 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 56281338 is about 7502.0889090973. The cubic root of 56281338 is about 383.2258573722.

The spelling of 56281338 in words is "fifty-six million, two hundred eighty-one thousand, three hundred thirty-eight".