5621280 has 144 divisors (see below), whose sum is σ = 20684160. Its totient is φ = 1279488.

The previous prime is 5621267. The next prime is 5621281. The reversal of 5621280 is 821265.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 5621280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23401 + ... + 23639.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

Almost surely, 2^5621280 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 5621280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10342080).

5621280 is an abundant number, since it is smaller than the sum of its proper divisors (15062880).

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

5621280 is a wasteful number, since it uses less digits than its factorization.

5621280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 5621280 is about 2370.9238705619. The cubic root of 5621280 is about 177.8054517104.

The spelling of 5621280 in words is "five million, six hundred twenty-one thousand, two hundred eighty".