30894427768 has 8 divisors (see below), whose sum is σ = 57927052080. Its totient is φ = 15447213880.

The previous prime is 30894427757. The next prime is 30894427799. The reversal of 30894427768 is 86772449803.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×30894427768² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930901728 + ... + 1930901743.

It is an arithmetic number, because the mean of its divisors is an integer number (7240881510).

Almost surely, 2^30894427768 is an apocalyptic number.

It is an amenable number.

30894427768 is a deficient number, since it is larger than the sum of its proper divisors (27032624312).

30894427768 is a wasteful number, since it uses less digits than its factorization.

30894427768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3861803477 (or 3861803473 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 58.

The spelling of 30894427768 in words is "thirty billion, eight hundred ninety-four million, four hundred twenty-seven thousand, seven hundred sixty-eight".