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30707712000 = 21532537217
BaseRepresentation
bin11100100110010100…
…101000000000000000
32221021001222101201200
4130212110220000000
51000342133241000
622035032501200
72134652150100
oct344624500000
987231871650
1030707712000
1112028780589
125b4bb4a800
132b84ba47b4
1416b442d200
15bead21500
hex726528000

30707712000 has 1152 divisors, whose sum is σ = 136360509480. Its totient is φ = 6606028800.

The previous prime is 30707711987. The next prime is 30707712001. The reversal of 30707712000 is 21770703.

It can be written as a sum of positive squares in 4 ways, for example, as 13359661056 + 17348050944 = 115584^2 + 131712^2 .

It is a tau number, because it is divible by the number of its divisors (1152).

It is not an unprimeable number, because it can be changed into a prime (30707712001) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1806335992 + ... + 1806336008.

Almost surely, 230707712000 is an apocalyptic number.

30707712000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30707712000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68180254740).

30707712000 is an abundant number, since it is smaller than the sum of its proper divisors (105652797480).

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

30707712000 is an equidigital number, since it uses as much as digits as its factorization.

30707712000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 27.

The spelling of 30707712000 in words is "thirty billion, seven hundred seven million, seven hundred twelve thousand".