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13697189 = 111789823
BaseRepresentation
bin110100010000…
…000010100101
3221202220000022
4310100002211
512001302224
61205324525
7224265332
oct64200245
927686008
1013697189
1178059a0
124706745
132ab765c
141b67989
15130865e
hexd100a5

13697189 has 16 divisors (see below), whose sum is σ = 16018560. Its totient is φ = 11573760.

The previous prime is 13697149. The next prime is 13697197. The reversal of 13697189 is 98179631.

It is not a de Polignac number, because 13697189 - 220 = 12648613 is a prime.

It is a super-2 number, since 2×136971892 = 375225973003442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13697129) 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, 16232 + ... + 17054.

It is an arithmetic number, because the mean of its divisors is an integer number (1001160).

Almost surely, 213697189 is an apocalyptic number.

It is an amenable number.

13697189 is a deficient number, since it is larger than the sum of its proper divisors (2321371).

13697189 is a wasteful number, since it uses less digits than its factorization.

13697189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940.

The product of its digits is 81648, while the sum is 44.

The square root of 13697189 is about 3700.9713589813. The cubic root of 13697189 is about 239.2638845800.

It can be divided in two parts, 1369 and 7189, that added together give a palindrome (8558).

The spelling of 13697189 in words is "thirteen million, six hundred ninety-seven thousand, one hundred eighty-nine".

Divisors: 1 11 17 89 187 823 979 1513 9053 13991 16643 73247 153901 805717 1245199 13697189