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13498693 = 1310192
BaseRepresentation
bin110011011111…
…100101000101
3221101210201121
4303133211011
511423424233
61201153541
7222510535
oct63374505
927353647
1013498693
11768a84a
12462b8b1
132a481c0
141b154c5
1512b992d
hexcdf945

13498693 has 6 divisors (see below), whose sum is σ = 14551334. Its totient is φ = 12448104.

The previous prime is 13498687. The next prime is 13498739. The reversal of 13498693 is 39689431.

It can be written as a sum of positive squares in only one way, i.e., 9345249 + 4153444 = 3057^2 + 2038^2 .

It is not a de Polignac number, because 13498693 - 29 = 13498181 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 (13498643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12738 + ... + 13756.

Almost surely, 213498693 is an apocalyptic number.

13498693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13498693 is a deficient number, since it is larger than the sum of its proper divisors (1052641).

13498693 is an frugal number, since it uses more digits than its factorization.

13498693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051 (or 1032 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 13498693 is about 3674.0567496978. The cubic root of 13498693 is about 238.1024733503.

The spelling of 13498693 in words is "thirteen million, four hundred ninety-eight thousand, six hundred ninety-three".

Divisors: 1 13 1019 13247 1038361 13498693