5637840420 has 96 divisors (see below), whose sum is σ = 16366371840. Its totient is φ = 1448570880.

The previous prime is 5637840401. The next prime is 5637840427. The reversal of 5637840420 is 240487365.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5637840427) 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, 426876 + ... + 439884.

It is an arithmetic number, because the mean of its divisors is an integer number (170483040).

Almost surely, 2^5637840420 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 5637840420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8183185920).

5637840420 is an abundant number, since it is smaller than the sum of its proper divisors (10728531420).

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

5637840420 is a wasteful number, since it uses less digits than its factorization.

5637840420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13285 (or 13283 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 5637840420 is about 75085.5540034167. The cubic root of 5637840420 is about 1779.7988684072.

The spelling of 5637840420 in words is "five billion, six hundred thirty-seven million, eight hundred forty thousand, four hundred twenty".