56743220 has 24 divisors (see below), whose sum is σ = 120258600. Its totient is φ = 22488192.

The previous prime is 56743213. The next prime is 56743249. The reversal of 56743220 is 2234765.

56743220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 972196 + 55771024 = 986^2 + 7468^2 .

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 7 ways as a sum of consecutive naturals, for example, 10835 + ... + 15194.

It is an arithmetic number, because the mean of its divisors is an integer number (5010775).

Almost surely, 2^56743220 is an apocalyptic number.

It is an amenable number.

56743220 is an abundant number, since it is smaller than the sum of its proper divisors (63515380).

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

56743220 is a wasteful number, since it uses less digits than its factorization.

56743220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26147 (or 26145 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 56743220 is about 7532.8095688130. The cubic root of 56743220 is about 384.2713378114.

Adding to 56743220 its reverse (2234765), we get a palindrome (58977985).

The spelling of 56743220 in words is "fifty-six million, seven hundred forty-three thousand, two hundred twenty".