30436812928 has 16 divisors (see below), whose sum is σ = 60635838510. Its totient is φ = 15218406400.

The previous prime is 30436812881. The next prime is 30436812929. The reversal of 30436812928 is 82921863403.

It can be written as a sum of positive squares in only one way, i.e., 29719001664 + 717811264 = 172392^2 + 26792^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (30436812929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118893673 + ... + 118893928.

Almost surely, 2^30436812928 is an apocalyptic number.

It is an amenable number.

30436812928 is a deficient number, since it is larger than the sum of its proper divisors (30199025582).

30436812928 is an equidigital number, since it uses as much as digits as its factorization.

30436812928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237787615 (or 237787603 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 30436812928 in words is "thirty billion, four hundred thirty-six million, eight hundred twelve thousand, nine hundred twenty-eight".