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13073941 = 25575113
BaseRepresentation
bin110001110111…
…111000010101
3220121020002001
4301313320111
511321331231
61144115301
7216061306
oct61677025
926536061
1013073941
11741a711
124465b31
132929a7a
141a447ad
151233b61
hexc77e15

13073941 has 4 divisors (see below), whose sum is σ = 13081612. Its totient is φ = 13066272.

The previous prime is 13073939. The next prime is 13073989. The reversal of 13073941 is 14937031.

13073941 is a nontrivial binomial coefficient, being equal to C(5114, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14937031 = 94715773.

It can be written as a sum of positive squares in 2 ways, for example, as 2044900 + 11029041 = 1430^2 + 3321^2 .

It is a 3-Lehmer number, since φ(13073941) divides (13073941-1)3.

It is a cyclic number.

It is not a de Polignac number, because 13073941 - 21 = 13073939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13073141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 5113.

It is an arithmetic number, because the mean of its divisors is an integer number (3270403).

It is a Poulet number, since it divides 213073940-1.

Almost surely, 213073941 is an apocalyptic number.

13073941 is the 5113-rd triangular number and also the 2557-th hexagonal number.

13073941 is the 1705-th centered nonagonal number.

It is an amenable number.

13073941 is a deficient number, since it is larger than the sum of its proper divisors (7671).

13073941 is an equidigital number, since it uses as much as digits as its factorization.

13073941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 13073941 is about 3615.7905083121. The cubic root of 13073941 is about 235.5784212093.

The spelling of 13073941 in words is "thirteen million, seventy-three thousand, nine hundred forty-one".

Divisors: 1 2557 5113 13073941