30940757440 has 112 divisors (see below), whose sum is σ = 75196598400. Its totient is φ = 12123758592.

The previous prime is 30940757411. The next prime is 30940757443. The reversal of 30940757440 is 4475704903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30940757443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3099337 + ... + 3109303.

It is an arithmetic number, because the mean of its divisors is an integer number (671398200).

Almost surely, 2^30940757440 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 30940757440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37598299200).

30940757440 is an abundant number, since it is smaller than the sum of its proper divisors (44255840960).

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

30940757440 is a wasteful number, since it uses less digits than its factorization.

30940757440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10182 (or 10172 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 30940757440 in words is "thirty billion, nine hundred forty million, seven hundred fifty-seven thousand, four hundred forty".