5721320 has 32 divisors (see below), whose sum is σ = 14044320. Its totient is φ = 2080320.

The previous prime is 5721307. The next prime is 5721343. The reversal of 5721320 is 231275.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 5721292 and 5721301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6062 + ... + 6941.

It is an arithmetic number, because the mean of its divisors is an integer number (438885).

Almost surely, 2^5721320 is an apocalyptic number.

It is an amenable number.

5721320 is an abundant number, since it is smaller than the sum of its proper divisors (8323000).

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

5721320 is a wasteful number, since it uses less digits than its factorization.

5721320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13025 (or 13021 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 5721320 is about 2391.9280925647. The cubic root of 5721320 is about 178.8540366214.

Adding to 5721320 its reverse (231275), we get a palindrome (5952595).

The spelling of 5721320 in words is "five million, seven hundred twenty-one thousand, three hundred twenty".