27428012346 has 96 divisors (see below), whose sum is σ = 65161998720. Its totient is φ = 7672541184.

The previous prime is 27428012329. The next prime is 27428012387. The reversal of 27428012346 is 64321082472.

It is a happy number.

It is a super-2 number, since 2×27428012346² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2690010 + ... + 2700186.

It is an arithmetic number, because the mean of its divisors is an integer number (678770820).

Almost surely, 2^27428012346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27428012346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32580999360).

27428012346 is an abundant number, since it is smaller than the sum of its proper divisors (37733986374).

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

27428012346 is a wasteful number, since it uses less digits than its factorization.

27428012346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10388 (or 10381 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 27428012346 in words is "twenty-seven billion, four hundred twenty-eight million, twelve thousand, three hundred forty-six".