30721676176 has 45 divisors (see below), whose sum is σ = 61687375633. Its totient is φ = 14821338560.

The previous prime is 30721676131. The next prime is 30721676177. The reversal of 30721676176 is 67167612703.

The square root of 30721676176 is 175276.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16109701776 + 14611974400 = 126924^2 + 120880^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30721676177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20331261 + ... + 20332771.

Almost surely, 2^30721676176 is an apocalyptic number.

30721676176 is the 175276-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30721676176

30721676176 is an abundant number, since it is smaller than the sum of its proper divisors (30965699457).

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

30721676176 is an frugal number, since it uses more digits than its factorization.

30721676176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088 (or 1542 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 46.

The spelling of 30721676176 in words is "thirty billion, seven hundred twenty-one million, six hundred seventy-six thousand, one hundred seventy-six".