630400824240 has 80 divisors (see below), whose sum is σ = 2131900978176. Its totient is φ = 152824441600.

The previous prime is 630400824233. The next prime is 630400824271. The reversal of 630400824240 is 42428004036.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 119391456 + ... + 119396735.

Almost surely, 2^630400824240 is an apocalyptic number.

630400824240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

630400824240 is an abundant number, since it is smaller than the sum of its proper divisors (1501500153936).

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

630400824240 is a wasteful number, since it uses less digits than its factorization.

630400824240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238788218 (or 238788212 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 630400824240 its reverse (42428004036), we get a palindrome (672828828276).

The spelling of 630400824240 in words is "six hundred thirty billion, four hundred million, eight hundred twenty-four thousand, two hundred forty".