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13871486 = 247173853
BaseRepresentation
bin110100111010…
…100101111110
3222002202002202
4310322211332
512022341421
61213151502
7225622436
oct64724576
928082082
1013871486
117914942
12478b592
132b48aa5
141bb12c6
15134010b
hexd3a97e

13871486 has 16 divisors (see below), whose sum is σ = 21397824. Its totient is φ = 6741024.

The previous prime is 13871471. The next prime is 13871491. The reversal of 13871486 is 68417831.

It is a super-3 number, since 3×138714863 (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15836 + ... + 16688.

It is an arithmetic number, because the mean of its divisors is an integer number (1337364).

Almost surely, 213871486 is an apocalyptic number.

13871486 is a deficient number, since it is larger than the sum of its proper divisors (7526338).

13871486 is a wasteful number, since it uses less digits than its factorization.

13871486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075.

The product of its digits is 32256, while the sum is 38.

The square root of 13871486 is about 3724.4443880933. Note that the first 3 decimals coincide. The cubic root of 13871486 is about 240.2744891864.

The spelling of 13871486 in words is "thirteen million, eight hundred seventy-one thousand, four hundred eighty-six".

Divisors: 1 2 47 94 173 346 853 1706 8131 16262 40091 80182 147569 295138 6935743 13871486