30672705220 has 24 divisors (see below), whose sum is σ = 64416069144. Its totient is φ = 12268436736.

The previous prime is 30672705169. The next prime is 30672705223. The reversal of 30672705220 is 2250727603.

It can be written as a sum of positive squares in 4 ways, for example, as 7902498816 + 22770206404 = 88896^2 + 150898^2 .

It is not an unprimeable number, because it can be changed into a prime (30672705223) 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, 588544 + ... + 638536.

It is an arithmetic number, because the mean of its divisors is an integer number (2684002881).

Almost surely, 2^30672705220 is an apocalyptic number.

It is an amenable number.

30672705220 is an abundant number, since it is smaller than the sum of its proper divisors (33743363924).

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

30672705220 is a wasteful number, since it uses less digits than its factorization.

30672705220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80679 (or 80677 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 34.

The spelling of 30672705220 in words is "thirty billion, six hundred seventy-two million, seven hundred five thousand, two hundred twenty".