13478405 has 8 divisors (see below), whose sum is σ = 16243200. Its totient is φ = 10736656.

The previous prime is 13478401. The next prime is 13478431. The reversal of 13478405 is 50487431.

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

It is a cyclic number.

It is not a de Polignac number, because 13478405 - 2² = 13478401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13478401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4445 + ... + 6834.

It is an arithmetic number, because the mean of its divisors is an integer number (2030400).

Almost surely, 2^13478405 is an apocalyptic number.

It is an amenable number.

13478405 is a deficient number, since it is larger than the sum of its proper divisors (2764795).

13478405 is a wasteful number, since it uses less digits than its factorization.

13478405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11523.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 13478405 is about 3671.2947307455. The cubic root of 13478405 is about 237.9831273494.

The spelling of 13478405 in words is "thirteen million, four hundred seventy-eight thousand, four hundred five".