5821220 has 24 divisors (see below), whose sum is σ = 12868800. Its totient is φ = 2205792.

The previous prime is 5821213. The next prime is 5821229. The reversal of 5821220 is 221285.

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 = 5821192 and 5821201.

It is not an unprimeable number, because it can be changed into a prime (5821229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7280 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (536200).

Almost surely, 2^5821220 is an apocalyptic number.

It is an amenable number.

5821220 is an abundant number, since it is smaller than the sum of its proper divisors (7047580).

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

5821220 is a wasteful number, since it uses less digits than its factorization.

5821220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15347 (or 15345 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 5821220 is about 2412.7204562485. The cubic root of 5821220 is about 179.8890262466.

The spelling of 5821220 in words is "five million, eight hundred twenty-one thousand, two hundred twenty".