13405534 has 8 divisors (see below), whose sum is σ = 20124648. Its totient is φ = 6697320.

The previous prime is 13405519. The next prime is 13405541. The reversal of 13405534 is 43550431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13405499 and 13405508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1969 + ... + 5539.

It is an arithmetic number, because the mean of its divisors is an integer number (2515581).

Almost surely, 2^13405534 is an apocalyptic number.

13405534 is a deficient number, since it is larger than the sum of its proper divisors (6719114).

13405534 is a wasteful number, since it uses less digits than its factorization.

13405534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 13405534 is about 3661.3568523158. The cubic root of 13405534 is about 237.5534668175.

Adding to 13405534 its reverse (43550431), we get a palindrome (56955965).

The spelling of 13405534 in words is "thirteen million, four hundred five thousand, five hundred thirty-four".