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13698293 = 72279557
BaseRepresentation
bin110100010000…
…010011110101
3221202221112012
4310100103311
512001321133
61205334005
7224301500
oct64202365
927687465
1013698293
117806804
124707305
132ab7ccb
141b68137
151308b48
hexd104f5

13698293 has 6 divisors (see below), whose sum is σ = 15934806. Its totient is φ = 11741352.

The previous prime is 13698283. The next prime is 13698299. The reversal of 13698293 is 39289631.

It can be written as a sum of positive squares in only one way, i.e., 10099684 + 3598609 = 3178^2 + 1897^2 .

It is not a de Polignac number, because 13698293 - 210 = 13697269 is a prime.

It is a super-2 number, since 2×136982932 = 375286462227698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13698293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13698299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139730 + ... + 139827.

It is an arithmetic number, because the mean of its divisors is an integer number (2655801).

Almost surely, 213698293 is an apocalyptic number.

It is an amenable number.

13698293 is a deficient number, since it is larger than the sum of its proper divisors (2236513).

13698293 is an equidigital number, since it uses as much as digits as its factorization.

13698293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279571 (or 279564 counting only the distinct ones).

The product of its digits is 69984, while the sum is 41.

The square root of 13698293 is about 3701.1205060090. The cubic root of 13698293 is about 239.2703126685.

The spelling of 13698293 in words is "thirteen million, six hundred ninety-eight thousand, two hundred ninety-three".

Divisors: 1 7 49 279557 1956899 13698293