30069697728 has 112 divisors (see below), whose sum is σ = 93039752960. Its totient is φ = 8391527424.

The previous prime is 30069697727. The next prime is 30069697759. The reversal of 30069697728 is 82779696003.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (30069697727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202363 + ... + 317946.

It is an arithmetic number, because the mean of its divisors is an integer number (830712080).

Almost surely, 2^30069697728 is an apocalyptic number.

It is an amenable number.

30069697728 is an abundant number, since it is smaller than the sum of its proper divisors (62970055232).

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

30069697728 is a wasteful number, since it uses less digits than its factorization.

30069697728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520374 (or 520364 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 30069697728 in words is "thirty billion, sixty-nine million, six hundred ninety-seven thousand, seven hundred twenty-eight".