13405481 has 8 divisors (see below), whose sum is σ = 14287104. Its totient is φ = 12548800.

The previous prime is 13405471. The next prime is 13405519. The reversal of 13405481 is 18450431.

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

It is not a de Polignac number, because 13405481 - 2²² = 9211177 is a prime.

It is a super-2 number, since 2×13405481² = 359413841682722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13405481.

It is not an unprimeable number, because it can be changed into a prime (13405411) 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, 5120 + ... + 7281.

It is an arithmetic number, because the mean of its divisors is an integer number (1785888).

Almost surely, 2^13405481 is an apocalyptic number.

It is an amenable number.

13405481 is a deficient number, since it is larger than the sum of its proper divisors (881623).

13405481 is a wasteful number, since it uses less digits than its factorization.

13405481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12471.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 13405481 is about 3661.3496145547. The cubic root of 13405481 is about 237.5531537540.

The spelling of 13405481 in words is "thirteen million, four hundred five thousand, four hundred eighty-one".