630443220 has 48 divisors (see below), whose sum is σ = 1925719488. Its totient is φ = 152834560.

The previous prime is 630443201. The next prime is 630443239. The reversal of 630443220 is 22344036.

It is a happy number.

630443220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (630443201) and next prime (630443239).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476949 + ... + 478268.

It is an arithmetic number, because the mean of its divisors is an integer number (40119156).

Almost surely, 2^630443220 is an apocalyptic number.

630443220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

630443220 is an abundant number, since it is smaller than the sum of its proper divisors (1295276268).

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

630443220 is a wasteful number, since it uses less digits than its factorization.

630443220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955240 (or 955238 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 630443220 is about 25108.6283974255. The cubic root of 630443220 is about 857.4628758220.

Adding to 630443220 its reverse (22344036), we get a palindrome (652787256).

The spelling of 630443220 in words is "six hundred thirty million, four hundred forty-three thousand, two hundred twenty".