5809905720 has 144 divisors (see below), whose sum is σ = 20058606360. Its totient is φ = 1458146304.

The previous prime is 5809905691. The next prime is 5809905757. The reversal of 5809905720 is 275099085.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 76119 + ... + 131961.

Almost surely, 2^5809905720 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 5809905720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10029303180).

5809905720 is an abundant number, since it is smaller than the sum of its proper divisors (14248700640).

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

5809905720 is a wasteful number, since it uses less digits than its factorization.

5809905720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55894 (or 55870 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 5809905720 is about 76222.7375525178. The cubic root of 5809905720 is about 1797.7240493882.

The spelling of 5809905720 in words is "five billion, eight hundred nine million, nine hundred five thousand, seven hundred twenty".