13405434 has 32 divisors (see below), whose sum is σ = 31297536. Its totient is φ = 3748080.

The previous prime is 13405429. The next prime is 13405451. The reversal of 13405434 is 43450431.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 1422 + ... + 5369.

It is an arithmetic number, because the mean of its divisors is an integer number (978048).

Almost surely, 2^13405434 is an apocalyptic number.

13405434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13405434 is an abundant number, since it is smaller than the sum of its proper divisors (17892102).

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

13405434 is a wasteful number, since it uses less digits than its factorization.

13405434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6850.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 13405434 is about 3661.3431961508. The cubic root of 13405434 is about 237.5528761309.

Adding to 13405434 its reverse (43450431), we get a palindrome (56855865).

The spelling of 13405434 in words is "thirteen million, four hundred five thousand, four hundred thirty-four".