5621240 has 32 divisors (see below), whose sum is σ = 12798000. Its totient is φ = 2221824.

The previous prime is 5621221. The next prime is 5621243. The reversal of 5621240 is 421265.

5621240 = 206² + 207² + ... + 294².

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621243) 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 7 ways as a sum of consecutive naturals, for example, 2771 + ... + 4349.

Almost surely, 2^5621240 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 5621240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6399000).

5621240 is an abundant number, since it is smaller than the sum of its proper divisors (7176760).

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

5621240 is a wasteful number, since it uses less digits than its factorization.

5621240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679 (or 1675 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 5621240 is about 2370.9154350166. The cubic root of 5621240 is about 177.8050299657.

The spelling of 5621240 in words is "five million, six hundred twenty-one thousand, two hundred forty".