56841720 has 128 divisors (see below), whose sum is σ = 186278400. Its totient is φ = 13791744.

The previous prime is 56841713. The next prime is 56841737. The reversal of 56841720 is 2714865.

It is a super-2 number, since 2×56841720² = 6461962265116800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129261 + ... + 129699.

It is an arithmetic number, because the mean of its divisors is an integer number (1455300).

Almost surely, 2^56841720 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 56841720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93139200).

56841720 is an abundant number, since it is smaller than the sum of its proper divisors (129436680).

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

56841720 is a wasteful number, since it uses less digits than its factorization.

56841720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 56841720 is about 7539.3447991188. The cubic root of 56841720 is about 384.4935602273.

The spelling of 56841720 in words is "fifty-six million, eight hundred forty-one thousand, seven hundred twenty".