30940748928 has 128 divisors (see below), whose sum is σ = 91412889600. Its totient is φ = 10302888960.

The previous prime is 30940748893. The next prime is 30940748939. The reversal of 30940748928 is 82984704903.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 3773313 + ... + 3781503.

It is an arithmetic number, because the mean of its divisors is an integer number (714163200).

Almost surely, 2^30940748928 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 30940748928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45706444800).

30940748928 is an abundant number, since it is smaller than the sum of its proper divisors (60472140672).

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

30940748928 is a wasteful number, since it uses less digits than its factorization.

30940748928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9307 (or 9289 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 30940748928 in words is "thirty billion, nine hundred forty million, seven hundred forty-eight thousand, nine hundred twenty-eight".