5721828 has 72 divisors (see below), whose sum is σ = 16011072. Its totient is φ = 1584576.

The previous prime is 5721823. The next prime is 5721829. The reversal of 5721828 is 8281275.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (5721823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21625 + ... + 21887.

It is an arithmetic number, because the mean of its divisors is an integer number (222376).

Almost surely, 2^5721828 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 5721828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8005536).

5721828 is an abundant number, since it is smaller than the sum of its proper divisors (10289244).

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

5721828 is a wasteful number, since it uses less digits than its factorization.

5721828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 312 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 5721828 is about 2392.0342806908. The cubic root of 5721828 is about 178.8593299897.

The spelling of 5721828 in words is "five million, seven hundred twenty-one thousand, eight hundred twenty-eight".