30764728456 has 64 divisors (see below), whose sum is σ = 72049812480. Its totient is φ = 11964214080.

The previous prime is 30764728429. The next prime is 30764728481. The reversal of 30764728456 is 65482746703.

It is a super-2 number, since 2×30764728456² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291301 + ... + 382603.

It is an arithmetic number, because the mean of its divisors is an integer number (1125778320).

Almost surely, 2^30764728456 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 30764728456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36024906240).

30764728456 is an abundant number, since it is smaller than the sum of its proper divisors (41285084024).

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

30764728456 is a wasteful number, since it uses less digits than its factorization.

30764728456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91874 (or 91870 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 52.

The spelling of 30764728456 in words is "thirty billion, seven hundred sixty-four million, seven hundred twenty-eight thousand, four hundred fifty-six".