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13497138 = 233249947
BaseRepresentation
bin110011011111…
…001100110010
3221101201121000
4303133030302
511423402023
61201142430
7222503154
oct63371462
927351530
1013497138
117689666
12462aa16
132a47595
141b14ad4
1512b9243
hexcdf332

13497138 has 16 divisors (see below), whose sum is σ = 29993760. Its totient is φ = 4499028.

The previous prime is 13497109. The next prime is 13497149. The reversal of 13497138 is 83179431.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124920 + ... + 125027.

It is an arithmetic number, because the mean of its divisors is an integer number (1874610).

Almost surely, 213497138 is an apocalyptic number.

13497138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13497138 is an abundant number, since it is smaller than the sum of its proper divisors (16496622).

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

13497138 is a wasteful number, since it uses less digits than its factorization.

13497138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249958 (or 249952 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 13497138 is about 3673.8451246616. The cubic root of 13497138 is about 238.0933301549.

The spelling of 13497138 in words is "thirteen million, four hundred ninety-seven thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 9 18 27 54 249947 499894 749841 1499682 2249523 4499046 6748569 13497138