30648742840 has 32 divisors (see below), whose sum is σ = 68984578080. Its totient is φ = 12255069312.

The previous prime is 30648742801. The next prime is 30648742849. The reversal of 30648742840 is 4824784603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30648742849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25092 + ... + 248851.

It is an arithmetic number, because the mean of its divisors is an integer number (2155768065).

Almost surely, 2^30648742840 is an apocalyptic number.

It is an amenable number.

30648742840 is an abundant number, since it is smaller than the sum of its proper divisors (38335835240).

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

30648742840 is a wasteful number, since it uses less digits than its factorization.

30648742840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276751 (or 276747 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 46.

The spelling of 30648742840 in words is "thirty billion, six hundred forty-eight million, seven hundred forty-two thousand, eight hundred forty".