Search a number
-
+
13871952 = 2433163197
BaseRepresentation
bin110100111010…
…101101010000
3222002202202000
4310322231100
512022400302
61213154000
7225624003
oct64725520
928082660
1013871952
117915226
12478b900
132b49073
141bb153a
15134031c
hexd3ab50

13871952 has 80 divisors (see below), whose sum is σ = 40265280. Its totient is φ = 4572288.

The previous prime is 13871939. The next prime is 13871959. The reversal of 13871952 is 25917831.

13871952 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13871959) 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, 70318 + ... + 70514.

It is an arithmetic number, because the mean of its divisors is an integer number (503316).

Almost surely, 213871952 is an apocalyptic number.

13871952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13871952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20132640).

13871952 is an abundant number, since it is smaller than the sum of its proper divisors (26393328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13871952 is a wasteful number, since it uses less digits than its factorization.

13871952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 365 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 13871952 is about 3724.5069472348. The cubic root of 13871952 is about 240.2771797575.

The spelling of 13871952 in words is "thirteen million, eight hundred seventy-one thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 163 197 216 326 394 432 489 591 652 788 978 1182 1304 1467 1576 1773 1956 2364 2608 2934 3152 3546 3912 4401 4728 5319 5868 7092 7824 8802 9456 10638 11736 14184 17604 21276 23472 28368 32111 35208 42552 64222 70416 85104 96333 128444 192666 256888 288999 385332 513776 577998 770664 866997 1155996 1541328 1733994 2311992 3467988 4623984 6935976 13871952