Base | Representation |
---|---|
bin | 101111111111… |
… | …100001010011 |
3 | 212200011211000 |
4 | 233333201103 |
5 | 11210042242 |
6 | 1125353043 |
7 | 211636101 |
oct | 57774123 |
9 | 25604730 |
10 | 12580947 |
11 | 7113285 |
12 | 4268783 |
13 | 27b6562 |
14 | 1956c71 |
15 | 1187a4c |
hex | bff853 |
12580947 has 16 divisors (see below), whose sum is σ = 19240960. Its totient is φ = 8116200.
The previous prime is 12580943. The next prime is 12580949. The reversal of 12580947 is 74908521.
It is not a de Polignac number, because 12580947 - 22 = 12580943 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12580943) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6679 + ... + 8352.
It is an arithmetic number, because the mean of its divisors is an integer number (1202560).
Almost surely, 212580947 is an apocalyptic number.
12580947 is a deficient number, since it is larger than the sum of its proper divisors (6660013).
12580947 is a wasteful number, since it uses less digits than its factorization.
12580947 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15071 (or 15065 counting only the distinct ones).
The product of its (nonzero) digits is 20160, while the sum is 36.
The square root of 12580947 is about 3546.9630671886. The cubic root of 12580947 is about 232.5793277694.
The spelling of 12580947 in words is "twelve million, five hundred eighty thousand, nine hundred forty-seven".
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