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13938541 = 60722963
BaseRepresentation
bin110101001010…
…111101101101
3222020011002021
4311022331231
512032013131
61214430141
7226322101
oct65127555
928204067
1013938541
117960261
124802351
132b70476
141bcb901
151354e11
hexd4af6d

13938541 has 4 divisors (see below), whose sum is σ = 13962112. Its totient is φ = 13914972.

The previous prime is 13938527. The next prime is 13938553. The reversal of 13938541 is 14583931.

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: 14583931 = 55726183.

It is a cyclic number.

It is not a de Polignac number, because 13938541 - 211 = 13936493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13938497 and 13938506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13938511) 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, 10875 + ... + 12088.

It is an arithmetic number, because the mean of its divisors is an integer number (3490528).

Almost surely, 213938541 is an apocalyptic number.

13938541 is the 2156-th hex number.

It is an amenable number.

13938541 is a deficient number, since it is larger than the sum of its proper divisors (23571).

13938541 is an equidigital number, since it uses as much as digits as its factorization.

13938541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23570.

The product of its digits is 12960, while the sum is 34.

The square root of 13938541 is about 3733.4355491959. The cubic root of 13938541 is about 240.6610306646.

The spelling of 13938541 in words is "thirteen million, nine hundred thirty-eight thousand, five hundred forty-one".

Divisors: 1 607 22963 13938541