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13691241 = 334710789
BaseRepresentation
bin110100001110…
…100101101001
3221202120212000
4310032211221
512001104431
61205241213
7224242104
oct64164551
927676760
1013691241
117801483
124703209
132ab4a35
141b6573b
1513069e6
hexd0e969

13691241 has 16 divisors (see below), whose sum is σ = 20716800. Its totient is φ = 8932464.

The previous prime is 13691213. The next prime is 13691269. The reversal of 13691241 is 14219631.

13691241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13691213) and next prime (13691269).

It is not a de Polignac number, because 13691241 - 26 = 13691177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13691281) 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, 4126 + ... + 6663.

It is an arithmetic number, because the mean of its divisors is an integer number (1294800).

Almost surely, 213691241 is an apocalyptic number.

It is an amenable number.

13691241 is a deficient number, since it is larger than the sum of its proper divisors (7025559).

13691241 is a wasteful number, since it uses less digits than its factorization.

13691241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10845 (or 10839 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 13691241 is about 3700.1676989023. The cubic root of 13691241 is about 239.2292461435.

The spelling of 13691241 in words is "thirteen million, six hundred ninety-one thousand, two hundred forty-one".

Divisors: 1 3 9 27 47 141 423 1269 10789 32367 97101 291303 507083 1521249 4563747 13691241