Cookie Consent by FreePrivacyPolicy.com
Search a number
-
+
13870144 = 26316991
BaseRepresentation
bin110100111010…
…010001000000
3222002200021001
4310322101000
512022321034
61213141344
7225615511
oct64722100
928080231
1013870144
117913932
12478a854
132b482b2
141bb0a08
15133ea14
hexd3a440

13870144 has 28 divisors (see below), whose sum is σ = 28415488. Its totient is φ = 6710400.

The previous prime is 13870121. The next prime is 13870151. The reversal of 13870144 is 44107831.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512 + ... + 5479.

Almost surely, 213870144 is an apocalyptic number.

It is an amenable number.

13870144 is an abundant number, since it is smaller than the sum of its proper divisors (14545344).

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

13870144 is an equidigital number, since it uses as much as digits as its factorization.

13870144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7034 (or 7024 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 13870144 is about 3724.2642226351. The cubic root of 13870144 is about 240.2667404669.

Adding to 13870144 its reverse (44107831), we get a palindrome (57977975).

The spelling of 13870144 in words is "thirteen million, eight hundred seventy thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 31 32 62 64 124 248 496 992 1984 6991 13982 27964 55928 111856 216721 223712 433442 447424 866884 1733768 3467536 6935072 13870144