Base | Representation |
---|---|
bin | 100000110001011111… |
… | …1000000100100000000 |
3 | 20201122220200122010000 |
4 | 1001202333000210000 |
5 | 2123114310130110 |
6 | 52155431040000 |
7 | 5041041333402 |
oct | 1014277004400 |
9 | 221586618100 |
10 | 70380161280 |
11 | 27936847950 |
12 | 11782210000 |
13 | 6838131060 |
14 | 35992d4b72 |
15 | 1c6dba61c0 |
hex | 1062fc0900 |
70380161280 has 1440 divisors, whose sum is σ = 305146372608. Its totient is φ = 15261696000.
The previous prime is 70380161261. The next prime is 70380161303. The reversal of 70380161280 is 8216108307.
70380161280 is a `hidden beast` number, since 7 + 0 + 38 + 0 + 1 + 612 + 8 + 0 = 666.
It is a tau number, because it is divible by the number of its divisors (1440).
It is a super-2 number, since 2×703801612802 (a number of 22 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is an unprimeable number.
It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 696833230 + ... + 696833330.
Almost surely, 270380161280 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 70380161280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152573186304).
70380161280 is an abundant number, since it is smaller than the sum of its proper divisors (234766211328).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
70380161280 is a wasteful number, since it uses less digits than its factorization.
70380161280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 205 (or 182 counting only the distinct ones).
The product of its (nonzero) digits is 16128, while the sum is 36.
Adding to 70380161280 its reverse (8216108307), we get a palindrome (78596269587).
The spelling of 70380161280 in words is "seventy billion, three hundred eighty million, one hundred sixty-one thousand, two hundred eighty".
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