Search a number
-
+
13871942 = 273131963
BaseRepresentation
bin110100111010…
…101101000110
3222002202201122
4310322231012
512022400232
61213153542
7225623660
oct64725506
928082648
1013871942
117915217
12478b8b2
132b49066
141bb1530
151340312
hexd3ab46

13871942 has 16 divisors (see below), whose sum is σ = 24548352. Its totient is φ = 5753160.

The previous prime is 13871939. The next prime is 13871959. The reversal of 13871942 is 24917831.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15548 + ... + 16415.

It is an arithmetic number, because the mean of its divisors is an integer number (1534272).

Almost surely, 213871942 is an apocalyptic number.

13871942 is a deficient number, since it is larger than the sum of its proper divisors (10676410).

13871942 is a wasteful number, since it uses less digits than its factorization.

13871942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32003.

The product of its digits is 12096, while the sum is 35.

The square root of 13871942 is about 3724.5056047749. The cubic root of 13871942 is about 240.2771220206.

The spelling of 13871942 in words is "thirteen million, eight hundred seventy-one thousand, nine hundred forty-two".

Divisors: 1 2 7 14 31 62 217 434 31963 63926 223741 447482 990853 1981706 6935971 13871942