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12486971 = 71993887
BaseRepresentation
bin101111101000…
…100100111011
3212111101220102
4233220210323
511144040341
61123350015
7211065110
oct57504473
925441812
1012486971
117059712
12422230b
132782853
141930907
151169c9b
hexbe893b

12486971 has 8 divisors (see below), whose sum is σ = 15022080. Its totient is φ = 10139688.

The previous prime is 12486923. The next prime is 12486997. The reversal of 12486971 is 17968421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12486971 - 210 = 12485947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12486911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46811 + ... + 47076.

It is an arithmetic number, because the mean of its divisors is an integer number (1877760).

Almost surely, 212486971 is an apocalyptic number.

12486971 is a deficient number, since it is larger than the sum of its proper divisors (2535109).

12486971 is an equidigital number, since it uses as much as digits as its factorization.

12486971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93913.

The product of its digits is 24192, while the sum is 38.

The square root of 12486971 is about 3533.6908466927. The cubic root of 12486971 is about 231.9987799678.

The spelling of 12486971 in words is "twelve million, four hundred eighty-six thousand, nine hundred seventy-one".

Divisors: 1 7 19 133 93887 657209 1783853 12486971