30005971968 has 88 divisors (see below), whose sum is σ = 91402185472. Its totient is φ = 8573128704.

The previous prime is 30005971967. The next prime is 30005971969. The reversal of 30005971968 is 86917950003.

It is an interprime number because it is at equal distance from previous prime (30005971967) and next prime (30005971969).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (30005971967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676180 + ... + 719187.

Almost surely, 2^30005971968 is an apocalyptic number.

It is an amenable number.

30005971968 is an abundant number, since it is smaller than the sum of its proper divisors (61396213504).

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

30005971968 is a wasteful number, since it uses less digits than its factorization.

30005971968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395397 (or 1395379 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 30005971968 in words is "thirty billion, five million, nine hundred seventy-one thousand, nine hundred sixty-eight".