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13880159 = 61322643
BaseRepresentation
bin110100111100…
…101101011111
3222010011222222
4310330231133
512023131114
61213255555
7225656636
oct64745537
928104888
1013880159
117920407
1247945bb
132b4ca17
141bb451d
15134298e
hexd3cb5f

13880159 has 4 divisors (see below), whose sum is σ = 13903416. Its totient is φ = 13856904.

The previous prime is 13880149. The next prime is 13880227. The reversal of 13880159 is 95108831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13880159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13880149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10709 + ... + 11934.

It is an arithmetic number, because the mean of its divisors is an integer number (3475854).

Almost surely, 213880159 is an apocalyptic number.

13880159 is a deficient number, since it is larger than the sum of its proper divisors (23257).

13880159 is an equidigital number, since it uses as much as digits as its factorization.

13880159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23256.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 13880159 is about 3725.6085408964. The cubic root of 13880159 is about 240.3245551150.

The spelling of 13880159 in words is "thirteen million, eight hundred eighty thousand, one hundred fifty-nine".

Divisors: 1 613 22643 13880159