620040220 has 48 divisors (see below), whose sum is σ = 1339430400. Its totient is φ = 240964416.

The previous prime is 620040151. The next prime is 620040227. The reversal of 620040220 is 22040026.

It is a junction number, because it is equal to n+sod(n) for n = 620040194 and 620040203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620040227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169329 + ... + 172951.

It is an arithmetic number, because the mean of its divisors is an integer number (27904800).

Almost surely, 2^620040220 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 620040220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669715200).

620040220 is an abundant number, since it is smaller than the sum of its proper divisors (719390180).

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

620040220 is a wasteful number, since it uses less digits than its factorization.

620040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874 (or 3872 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 620040220 is about 24900.6068199151. The cubic root of 620040220 is about 852.7203364619.

Adding to 620040220 its reverse (22040026), we get a palindrome (642080246).

The spelling of 620040220 in words is "six hundred twenty million, forty thousand, two hundred twenty".