56807140 has 72 divisors (see below), whose sum is σ = 133432488. Its totient is φ = 20183040.

The previous prime is 56807129. The next prime is 56807141. The reversal of 56807140 is 4170865.

It can be written as a sum of positive squares in 12 ways, for example, as 33362176 + 23444964 = 5776^2 + 4842^2 .

It is not an unprimeable number, because it can be changed into a prime (56807141) 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, 778144 + ... + 778216.

It is an arithmetic number, because the mean of its divisors is an integer number (1853229).

Almost surely, 2^56807140 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 56807140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66716244).

56807140 is an abundant number, since it is smaller than the sum of its proper divisors (76625348).

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

56807140 is a wasteful number, since it uses less digits than its factorization.

56807140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 56807140 is about 7537.0511474979. The cubic root of 56807140 is about 384.4155747592.

The spelling of 56807140 in words is "fifty-six million, eight hundred seven thousand, one hundred forty".