Base | Representation |
---|---|
bin | 10010110001000… |
… | …11010001011111 |
3 | 101222020022120022 |
4 | 21120203101133 |
5 | 310300242004 |
6 | 23342142355 |
7 | 3621066104 |
oct | 1130432137 |
9 | 358208508 |
10 | 157430879 |
11 | 80958171 |
12 | 448819bb |
13 | 26801288 |
14 | 16ca0aab |
15 | dc4b2be |
hex | 962345f |
157430879 has 4 divisors (see below), whose sum is σ = 162859560. Its totient is φ = 152002200.
The previous prime is 157430873. The next prime is 157430881. The reversal of 157430879 is 978034751.
157430879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978034751 = 1429 ⋅684419.
It is a cyclic number.
It is not a de Polignac number, because 157430879 - 224 = 140653663 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (157430873) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2714297 + ... + 2714354.
It is an arithmetic number, because the mean of its divisors is an integer number (40714890).
Almost surely, 2157430879 is an apocalyptic number.
157430879 is a deficient number, since it is larger than the sum of its proper divisors (5428681).
157430879 is an equidigital number, since it uses as much as digits as its factorization.
157430879 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5428680.
The product of its (nonzero) digits is 211680, while the sum is 44.
The square root of 157430879 is about 12547.1462492473. The cubic root of 157430879 is about 539.9621361197.
The spelling of 157430879 in words is "one hundred fifty-seven million, four hundred thirty thousand, eight hundred seventy-nine".
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