13275405 has 48 divisors (see below), whose sum is σ = 27046656. Its totient is φ = 5938560.

The previous prime is 13275401. The next prime is 13275421. The reversal of 13275405 is 50457231.

It is a happy number.

It is not a de Polignac number, because 13275405 - 2² = 13275401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13275401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5404 + ... + 7466.

It is an arithmetic number, because the mean of its divisors is an integer number (563472).

Almost surely, 2^13275405 is an apocalyptic number.

13275405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13275405 is an abundant number, since it is smaller than the sum of its proper divisors (13771251).

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

13275405 is a wasteful number, since it uses less digits than its factorization.

13275405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 13275405 is about 3643.5429186439. The cubic root of 13275405 is about 236.7823136006.

The spelling of 13275405 in words is "thirteen million, two hundred seventy-five thousand, four hundred five".