27347965728 has 24 divisors (see below), whose sum is σ = 71788410288. Its totient is φ = 9115988544.

The previous prime is 27347965693. The next prime is 27347965741. The reversal of 27347965728 is 82756974372.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×27347965728² (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 3 ways as a sum of consecutive naturals, for example, 142437226 + ... + 142437417.

It is an arithmetic number, because the mean of its divisors is an integer number (2991183762).

Almost surely, 2^27347965728 is an apocalyptic number.

It is an amenable number.

27347965728 is an abundant number, since it is smaller than the sum of its proper divisors (44440444560).

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

27347965728 is a wasteful number, since it uses less digits than its factorization.

27347965728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284874656 (or 284874648 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 60.

The spelling of 27347965728 in words is "twenty-seven billion, three hundred forty-seven million, nine hundred sixty-five thousand, seven hundred twenty-eight".