630345400 has 48 divisors (see below), whose sum is σ = 1472059800. Its totient is φ = 251018880.

The previous prime is 630345347. The next prime is 630345449. The reversal of 630345400 is 4543036.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38919 + ... + 52681.

Almost surely, 2^630345400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630345400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (736029900).

630345400 is an abundant number, since it is smaller than the sum of its proper divisors (841714400).

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

630345400 is a wasteful number, since it uses less digits than its factorization.

630345400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14008 (or 13999 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 630345400 is about 25106.6803859053. The cubic root of 630345400 is about 857.4185253532.

Adding to 630345400 its reverse (4543036), we get a palindrome (634888436).

The spelling of 630345400 in words is "six hundred thirty million, three hundred forty-five thousand, four hundred".