1630705328 has 40 divisors (see below), whose sum is σ = 3612744960. Its totient is φ = 698506560.

The previous prime is 1630705303. The next prime is 1630705339. The reversal of 1630705328 is 8235070361.

It is an unprimeable number.

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, 396563 + ... + 400653.

It is an arithmetic number, because the mean of its divisors is an integer number (90318624).

Almost surely, 2^1630705328 is an apocalyptic number.

It is an amenable number.

1630705328 is an abundant number, since it is smaller than the sum of its proper divisors (1982039632).

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

1630705328 is a wasteful number, since it uses less digits than its factorization.

1630705328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7665 (or 7659 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1630705328 is about 40381.9926204738. The cubic root of 1630705328 is about 1177.0416480791.

Adding to 1630705328 its reverse (8235070361), we get a palindrome (9865775689).

The spelling of 1630705328 in words is "one billion, six hundred thirty million, seven hundred five thousand, three hundred twenty-eight".