630341440 has 56 divisors (see below), whose sum is σ = 1532973312. Its totient is φ = 246766080.

The previous prime is 630341407. The next prime is 630341449. The reversal of 630341440 is 44143036.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630341449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5916 + ... + 35995.

Almost surely, 2^630341440 is an apocalyptic number.

It is an amenable number.

630341440 is an abundant number, since it is smaller than the sum of its proper divisors (902631872).

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

630341440 is a wasteful number, since it uses less digits than its factorization.

630341440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41975 (or 41965 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 630341440 is about 25106.6015223088. The cubic root of 630341440 is about 857.4167298379.

Adding to 630341440 its reverse (44143036), we get a palindrome (674484476).

The spelling of 630341440 in words is "six hundred thirty million, three hundred forty-one thousand, four hundred forty".