30072661238 has 8 divisors (see below), whose sum is σ = 45112845888. Its totient is φ = 15035045944.

The previous prime is 30072661237. The next prime is 30072661261. The reversal of 30072661238 is 83216627003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30072661237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612806 + ... + 660057.

It is an arithmetic number, because the mean of its divisors is an integer number (5639105736).

Almost surely, 2^30072661238 is an apocalyptic number.

30072661238 is a deficient number, since it is larger than the sum of its proper divisors (15040184650).

30072661238 is a wasteful number, since it uses less digits than its factorization.

30072661238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284678.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 30072661238 in words is "thirty billion, seventy-two million, six hundred sixty-one thousand, two hundred thirty-eight".