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13782413 = 23957667
BaseRepresentation
bin110100100100…
…110110001101
3221221012220202
4310210312031
512012014123
61211223245
7225101651
oct64446615
927835822
1013782413
117863a27
124747b25
132b17398
141b8aa61
151323a28
hexd24d8d

13782413 has 4 divisors (see below), whose sum is σ = 13840320. Its totient is φ = 13724508.

The previous prime is 13782409. The next prime is 13782481. The reversal of 13782413 is 31428731.

13782413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31428731 = 157200183.

It is a cyclic number.

It is not a de Polignac number, because 13782413 - 22 = 13782409 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 (13782113) 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, 28595 + ... + 29072.

It is an arithmetic number, because the mean of its divisors is an integer number (3460080).

Almost surely, 213782413 is an apocalyptic number.

It is an amenable number.

13782413 is a deficient number, since it is larger than the sum of its proper divisors (57907).

13782413 is an equidigital number, since it uses as much as digits as its factorization.

13782413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57906.

The product of its digits is 4032, while the sum is 29.

The square root of 13782413 is about 3712.4672389127. The cubic root of 13782413 is about 239.7590927537.

The spelling of 13782413 in words is "thirteen million, seven hundred eighty-two thousand, four hundred thirteen".

Divisors: 1 239 57667 13782413