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13103727 = 372136857
BaseRepresentation
bin110001111111…
…001001101111
3220122201221020
4301333021233
511323304402
61144505223
7216244200
oct61771157
926581836
1013103727
11744002a
12447b213
13293a4b0
141a515a7
15123c8bc
hexc7f26f

13103727 has 24 divisors (see below), whose sum is σ = 21890736. Its totient is φ = 6910848.

The previous prime is 13103707. The next prime is 13103729. The reversal of 13103727 is 72730131.

It is not a de Polignac number, because 13103727 - 27 = 13103599 is a prime.

It is a super-2 number, since 2×131037272 = 343415322581058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13103697 and 13103706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1518 + ... + 5339.

It is an arithmetic number, because the mean of its divisors is an integer number (912114).

Almost surely, 213103727 is an apocalyptic number.

13103727 is a deficient number, since it is larger than the sum of its proper divisors (8787009).

13103727 is a wasteful number, since it uses less digits than its factorization.

13103727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6887 (or 6880 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 13103727 is about 3619.9070430054. The cubic root of 13103727 is about 235.7571894618.

Adding to 13103727 its reverse (72730131), we get a palindrome (85833858).

It can be divided in two parts, 13 and 103727, that added together give a triangular number (103740 = T455).

The spelling of 13103727 in words is "thirteen million, one hundred three thousand, seven hundred twenty-seven".

Divisors: 1 3 7 13 21 39 49 91 147 273 637 1911 6857 20571 47999 89141 143997 267423 335993 623987 1007979 1871961 4367909 13103727