30168972288 has 660 divisors, whose sum is σ = 113058217272. Its totient is φ = 7942717440.

The previous prime is 30168972257. The next prime is 30168972299. The reversal of 30168972288 is 88227986103.

It is a happy number.

It is a super-2 number, since 2×30168972288² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 52835043 + ... + 52835613.

Almost surely, 2^30168972288 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 30168972288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56529108636).

30168972288 is an abundant number, since it is smaller than the sum of its proper divisors (82889244984).

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

30168972288 is a wasteful number, since it uses less digits than its factorization.

30168972288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 30168972288 in words is "thirty billion, one hundred sixty-eight million, nine hundred seventy-two thousand, two hundred eighty-eight".