30728062848 has 64 divisors (see below), whose sum is σ = 93281627520. Its totient is φ = 8779445760.

The previous prime is 30728062831. The next prime is 30728062867. The reversal of 30728062848 is 84826082703.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×30728062848² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 30728062797 and 30728062806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5713098 + ... + 5718473.

It is an arithmetic number, because the mean of its divisors is an integer number (1457525430).

Almost surely, 2^30728062848 is an apocalyptic number.

It is an amenable number.

30728062848 is an abundant number, since it is smaller than the sum of its proper divisors (62553564672).

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

30728062848 is a wasteful number, since it uses less digits than its factorization.

30728062848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11431595 (or 11431583 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The spelling of 30728062848 in words is "thirty billion, seven hundred twenty-eight million, sixty-two thousand, eight hundred forty-eight".