56783740 has 96 divisors (see below), whose sum is σ = 140978880. Its totient is φ = 19009536.

The previous prime is 56783719. The next prime is 56783747. The reversal of 56783740 is 4738765.

It is a junction number, because it is equal to n+sod(n) for n = 56783693 and 56783702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56783747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127959 + ... + 128401.

It is an arithmetic number, because the mean of its divisors is an integer number (1468530).

Almost surely, 2^56783740 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 56783740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70489440).

56783740 is an abundant number, since it is smaller than the sum of its proper divisors (84195140).

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

56783740 is a wasteful number, since it uses less digits than its factorization.

56783740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 56783740 is about 7535.4986563598. The cubic root of 56783740 is about 384.3627846824.

The spelling of 56783740 in words is "fifty-six million, seven hundred eighty-three thousand, seven hundred forty".