30127207640 has 64 divisors (see below), whose sum is σ = 69110949600. Its totient is φ = 11815677952.

The previous prime is 30127207637. The next prime is 30127207667. The reversal of 30127207640 is 4670272103.

It is a junction number, because it is equal to n+sod(n) for n = 30127207597 and 30127207606.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4000919 + ... + 4008441.

Almost surely, 2^30127207640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30127207640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34555474800).

30127207640 is an abundant number, since it is smaller than the sum of its proper divisors (38983741960).

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

30127207640 is a wasteful number, since it uses less digits than its factorization.

30127207640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9476 (or 9472 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

Adding to 30127207640 its reverse (4670272103), we get a palindrome (34797479743).

The spelling of 30127207640 in words is "thirty billion, one hundred twenty-seven million, two hundred seven thousand, six hundred forty".