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13724101 = 65321017
BaseRepresentation
bin110100010110…
…100111000101
3221211020221001
4310112213011
512003132401
61210053301
7224436646
oct64264705
927736831
1013724101
117824136
12471a231
132ac6991
141b736cd
151311601
hexd169c5

13724101 has 4 divisors (see below), whose sum is σ = 13745772. Its totient is φ = 13702432.

The previous prime is 13724093. The next prime is 13724107. The reversal of 13724101 is 10142731.

13724101 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 an emirpimes, since its reverse is a distinct semiprime: 10142731 = 79128389.

It can be written as a sum of positive squares in 2 ways, for example, as 950625 + 12773476 = 975^2 + 3574^2 .

It is a cyclic number.

It is not a de Polignac number, because 13724101 - 23 = 13724093 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 (13724107) 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, 9856 + ... + 11161.

It is an arithmetic number, because the mean of its divisors is an integer number (3436443).

Almost surely, 213724101 is an apocalyptic number.

It is an amenable number.

13724101 is a deficient number, since it is larger than the sum of its proper divisors (21671).

13724101 is an equidigital number, since it uses as much as digits as its factorization.

13724101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21670.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 13724101 is about 3704.6053770948. The cubic root of 13724101 is about 239.4204825782.

Adding to 13724101 its reverse (10142731), we get a palindrome (23866832).

The spelling of 13724101 in words is "thirteen million, seven hundred twenty-four thousand, one hundred one".

Divisors: 1 653 21017 13724101