Search a number
-
+
13238629 = 15838363
BaseRepresentation
bin110010100000…
…000101100101
3220220120222121
4302200011211
511342114004
61151425541
7220345405
oct62400545
926816877
1013238629
117522418
1245252b1
132986a11
141a88805
151267854
hexca0165

13238629 has 4 divisors (see below), whose sum is σ = 13248576. Its totient is φ = 13228684.

The previous prime is 13238627. The next prime is 13238633. The reversal of 13238629 is 92683231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13238629 - 21 = 13238627 is a prime.

It is a super-2 number, since 2×132386292 = 350522595599282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13238594 and 13238603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13238627) 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, 2599 + ... + 5764.

It is an arithmetic number, because the mean of its divisors is an integer number (3312144).

Almost surely, 213238629 is an apocalyptic number.

It is an amenable number.

13238629 is a deficient number, since it is larger than the sum of its proper divisors (9947).

13238629 is an equidigital number, since it uses as much as digits as its factorization.

13238629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9946.

The product of its digits is 15552, while the sum is 34.

The square root of 13238629 is about 3638.4926824167. The cubic root of 13238629 is about 236.5634637865.

The spelling of 13238629 in words is "thirteen million, two hundred thirty-eight thousand, six hundred twenty-nine".

Divisors: 1 1583 8363 13238629