630433540 has 24 divisors (see below), whose sum is σ = 1444266432. Its totient is φ = 229248480.

The previous prime is 630433537. The next prime is 630433543. The reversal of 630433540 is 45334036.

It is an interprime number because it is at equal distance from previous prime (630433537) and next prime (630433543).

It is a junction number, because it is equal to n+sod(n) for n = 630433499 and 630433508.

It is not an unprimeable number, because it can be changed into a prime (630433543) 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, 1432584 + ... + 1433023.

It is an arithmetic number, because the mean of its divisors is an integer number (60177768).

Almost surely, 2^630433540 is an apocalyptic number.

It is an amenable number.

630433540 is an abundant number, since it is smaller than the sum of its proper divisors (813832892).

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

630433540 is a wasteful number, since it uses less digits than its factorization.

630433540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865627 (or 2865625 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 630433540 is about 25108.4356342644. The cubic root of 630433540 is about 857.4584872253.

Adding to 630433540 its reverse (45334036), we get a palindrome (675767576).

The spelling of 630433540 in words is "six hundred thirty million, four hundred thirty-three thousand, five hundred forty".