30745120752 has 100 divisors (see below), whose sum is σ = 89802090840. Its totient is φ = 10154305152.

The previous prime is 30745120751. The next prime is 30745120817. The reversal of 30745120752 is 25702154703.

30745120752 is a `hidden beast` number, since 3 + 0 + 74 + 512 + 0 + 75 + 2 = 666.

It is a super-2 number, since 2×30745120752² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30745120751) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32443 + ... + 250085.

Almost surely, 2^30745120752 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 30745120752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44901045420).

30745120752 is an abundant number, since it is smaller than the sum of its proper divisors (59056970088).

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

30745120752 is a wasteful number, since it uses less digits than its factorization.

30745120752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217772 (or 217757 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The spelling of 30745120752 in words is "thirty billion, seven hundred forty-five million, one hundred twenty thousand, seven hundred fifty-two".