5381820 has 72 divisors (see below), whose sum is σ = 16904160. Its totient is φ = 1384320.

The previous prime is 5381819. The next prime is 5381861. The reversal of 5381820 is 281835.

It is a happy number.

5381820 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4705 + ... + 5735.

It is an arithmetic number, because the mean of its divisors is an integer number (234780).

Almost surely, 2^5381820 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 5381820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8452080).

5381820 is an abundant number, since it is smaller than the sum of its proper divisors (11522340).

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

5381820 is a wasteful number, since it uses less digits than its factorization.

5381820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 5381820 is about 2319.8749966324. The cubic root of 5381820 is about 175.2439590701.

The spelling of 5381820 in words is "five million, three hundred eighty-one thousand, eight hundred twenty".