Base | Representation |
---|---|
bin | 11101010011001011… |
… | …10010011001010110 |
3 | 1111121021001202222200 |
4 | 32221211302121112 |
5 | 224203410012032 |
6 | 11120515505330 |
7 | 1064544062310 |
oct | 165145623126 |
9 | 44537052880 |
10 | 15730157142 |
11 | 6742299977 |
12 | 306bbb8246 |
13 | 1638bb6abb |
14 | a931ac7b0 |
15 | 620e9247c |
hex | 3a9972656 |
15730157142 has 24 divisors (see below), whose sum is σ = 38950865616. Its totient is φ = 4494330576.
The previous prime is 15730157117. The next prime is 15730157143. The reversal of 15730157142 is 24175103751.
15730157142 is a `hidden beast` number, since 1 + 57 + 30 + 1 + 571 + 4 + 2 = 666.
It is a junction number, because it is equal to n+sod(n) for n = 15730157097 and 15730157106.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15730157143) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62421133 + ... + 62421384.
It is an arithmetic number, because the mean of its divisors is an integer number (1622952734).
Almost surely, 215730157142 is an apocalyptic number.
15730157142 is an abundant number, since it is smaller than the sum of its proper divisors (23220708474).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15730157142 is a wasteful number, since it uses less digits than its factorization.
15730157142 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 124842532 (or 124842529 counting only the distinct ones).
The product of its (nonzero) digits is 29400, while the sum is 36.
The spelling of 15730157142 in words is "fifteen billion, seven hundred thirty million, one hundred fifty-seven thousand, one hundred forty-two".
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