Base | Representation |
---|---|
bin | 11011001000010110… |
… | …101001001100100000 |
3 | 2210012012110102100021 |
4 | 123020112221030200 |
5 | 434130040323010 |
6 | 21214354203224 |
7 | 2050616653222 |
oct | 331026511440 |
9 | 83165412307 |
10 | 29131182880 |
11 | 1139987a958 |
12 | 578bb83514 |
13 | 2993398c27 |
14 | 15a4cc8412 |
15 | b5770b8da |
hex | 6c85a9320 |
29131182880 has 48 divisors (see below), whose sum is σ = 70120976184. Its totient is φ = 11432611840.
The previous prime is 29131182877. The next prime is 29131182923. The reversal of 29131182880 is 8828113192.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 23015317264 + 6115865616 = 151708^2 + 78204^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1709161 + ... + 1726120.
Almost surely, 229131182880 is an apocalyptic number.
29131182880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
29131182880 is an abundant number, since it is smaller than the sum of its proper divisors (40989793304).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
29131182880 is a wasteful number, since it uses less digits than its factorization.
29131182880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3435349 (or 3435341 counting only the distinct ones).
The product of its (nonzero) digits is 55296, while the sum is 43.
The spelling of 29131182880 in words is "twenty-nine billion, one hundred thirty-one million, one hundred eighty-two thousand, eight hundred eighty".
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