630281340 has 72 divisors (see below), whose sum is σ = 2058926688. Its totient is φ = 155145600.

The previous prime is 630281339. The next prime is 630281381. The reversal of 630281340 is 43182036.

It is a happy number.

630281340 is a `hidden beast` number, since 630 + 28 + 1 + 3 + 4 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132336 + ... + 137015.

It is an arithmetic number, because the mean of its divisors is an integer number (28596204).

Almost surely, 2^630281340 is an apocalyptic number.

630281340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

630281340 is an abundant number, since it is smaller than the sum of its proper divisors (1428645348).

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

630281340 is a wasteful number, since it uses less digits than its factorization.

630281340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269379 (or 269374 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 630281340 is about 25105.4045974169. The cubic root of 630281340 is about 857.3894787958.

The spelling of 630281340 in words is "six hundred thirty million, two hundred eighty-one thousand, three hundred forty".