620444220 has 48 divisors (see below), whose sum is σ = 1895177088. Its totient is φ = 150410560.

The previous prime is 620444219. The next prime is 620444233. The reversal of 620444220 is 22444026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469374 + ... + 470693.

It is an arithmetic number, because the mean of its divisors is an integer number (39482856).

Almost surely, 2^620444220 is an apocalyptic number.

620444220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620444220 is an abundant number, since it is smaller than the sum of its proper divisors (1274732868).

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

620444220 is a wasteful number, since it uses less digits than its factorization.

620444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940090 (or 940088 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 620444220 is about 24908.7177510204. The cubic root of 620444220 is about 852.9054987627.

Adding to 620444220 its reverse (22444026), we get a palindrome (642888246).

The spelling of 620444220 in words is "six hundred twenty million, four hundred forty-four thousand, two hundred twenty".