30324760728 has 32 divisors (see below), whose sum is σ = 78257448960. Its totient is φ = 9782180640.

The previous prime is 30324760727. The next prime is 30324760733. The reversal of 30324760728 is 82706742303.

It is a super-2 number, since 2×30324760728² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30324760728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30324760721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20378800 + ... + 20380287.

It is an arithmetic number, because the mean of its divisors is an integer number (2445545280).

Almost surely, 2^30324760728 is an apocalyptic number.

It is an amenable number.

30324760728 is an abundant number, since it is smaller than the sum of its proper divisors (47932688232).

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

30324760728 is a wasteful number, since it uses less digits than its factorization.

30324760728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40759127 (or 40759123 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The spelling of 30324760728 in words is "thirty billion, three hundred twenty-four million, seven hundred sixty thousand, seven hundred twenty-eight".