30748765572 has 432 divisors, whose sum is σ = 99524421360. Its totient is φ = 7947878400.

The previous prime is 30748765519. The next prime is 30748765631. The reversal of 30748765572 is 27556784703.

It is a happy number.

30748765572 is a `hidden beast` number, since 3 + 0 + 7 + 4 + 8 + 7 + 65 + 572 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1341317376 + 29407448196 = 36624^2 + 171486^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 109426072 + ... + 109426352.

It is an arithmetic number, because the mean of its divisors is an integer number (230380605).

Almost surely, 2^30748765572 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 30748765572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49762210680).

30748765572 is an abundant number, since it is smaller than the sum of its proper divisors (68775655788).

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

30748765572 is a wasteful number, since it uses less digits than its factorization.

30748765572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 54.

The spelling of 30748765572 in words is "thirty billion, seven hundred forty-eight million, seven hundred sixty-five thousand, five hundred seventy-two".