Base | Representation |
---|---|
bin | 10111010001010100… |
… | …10010100101100000 |
3 | 1012020200102011120200 |
4 | 23220222102211200 |
5 | 201041243204010 |
6 | 5423411305200 |
7 | 621411410565 |
oct | 135052224540 |
9 | 35220364520 |
10 | 12493334880 |
11 | 5331186454 |
12 | 2507bab200 |
13 | 1241424c60 |
14 | 86735a86c |
15 | 4d1c1dcc0 |
hex | 2e8a92960 |
12493334880 has 144 divisors (see below), whose sum is σ = 45913074480. Its totient is φ = 3075277824.
The previous prime is 12493334869. The next prime is 12493334891. The reversal of 12493334880 is 8843339421.
12493334880 is a `hidden beast` number, since 12 + 493 + 33 + 48 + 80 = 666.
It is an interprime number because it is at equal distance from previous prime (12493334869) and next prime (12493334891).
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-2 number, since 2×124933348802 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 314970 + ... + 352409.
It is an arithmetic number, because the mean of its divisors is an integer number (318840795).
Almost surely, 212493334880 is an apocalyptic number.
12493334880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12493334880 is an abundant number, since it is smaller than the sum of its proper divisors (33419739600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12493334880 is a wasteful number, since it uses less digits than its factorization.
12493334880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 667413 (or 667402 counting only the distinct ones).
The product of its (nonzero) digits is 497664, while the sum is 45.
The spelling of 12493334880 in words is "twelve billion, four hundred ninety-three million, three hundred thirty-four thousand, eight hundred eighty".
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