630244128 has 96 divisors (see below), whose sum is σ = 1794623040. Its totient is φ = 192880640.

The previous prime is 630244127. The next prime is 630244133. The reversal of 630244128 is 821442036.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 630244095 and 630244104.

It is not an unprimeable number, because it can be changed into a prime (630244127) 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, 62203 + ... + 71621.

It is an arithmetic number, because the mean of its divisors is an integer number (18693990).

Almost surely, 2^630244128 is an apocalyptic number.

630244128 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630244128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897311520).

630244128 is an abundant number, since it is smaller than the sum of its proper divisors (1164378912).

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

630244128 is a wasteful number, since it uses less digits than its factorization.

630244128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490 (or 9482 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 630244128 is about 25104.6634711561. The cubic root of 630244128 is about 857.3726049528.

The spelling of 630244128 in words is "six hundred thirty million, two hundred forty-four thousand, one hundred twenty-eight".