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12870494 = 271370717
BaseRepresentation
bin110001000110…
…001101011110
3220012212222222
4301012031132
511243323434
61135505342
7214253210
oct61061536
926185888
1012870494
1172a087a
124388252
1328882a0
1419d05b0
1511e372e
hexc4635e

12870494 has 16 divisors (see below), whose sum is σ = 23761248. Its totient is φ = 5091552.

The previous prime is 12870493. The next prime is 12870497. The reversal of 12870494 is 49407821.

12870494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870493) 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, 35177 + ... + 35540.

It is an arithmetic number, because the mean of its divisors is an integer number (1485078).

Almost surely, 212870494 is an apocalyptic number.

12870494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12870494 is a deficient number, since it is larger than the sum of its proper divisors (10890754).

12870494 is a wasteful number, since it uses less digits than its factorization.

12870494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70739.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 12870494 is about 3587.5470728619. The cubic root of 12870494 is about 234.3500616784.

The spelling of 12870494 in words is "twelve million, eight hundred seventy thousand, four hundred ninety-four".

Divisors: 1 2 7 13 14 26 91 182 70717 141434 495019 919321 990038 1838642 6435247 12870494