13641534 has 24 divisors (see below), whose sum is σ = 30652440. Its totient is φ = 4547016.

The previous prime is 13641533. The next prime is 13641539. The reversal of 13641534 is 43514631.

13641534 is a `hidden beast` number, since 13 + 641 + 5 + 3 + 4 = 666.

13641534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 13641498 and 13641507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13641533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13549 + ... + 14520.

It is an arithmetic number, because the mean of its divisors is an integer number (1277185).

Almost surely, 2^13641534 is an apocalyptic number.

13641534 is an abundant number, since it is smaller than the sum of its proper divisors (17010906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13641534 is an equidigital number, since it uses as much as digits as its factorization.

13641534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28086 (or 28074 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 13641534 is about 3693.4447335787. Note that the first 3 decimals coincide. The cubic root of 13641534 is about 238.9393822797.

The spelling of 13641534 in words is "thirteen million, six hundred forty-one thousand, five hundred thirty-four".