27481413 has 4 divisors (see below), whose sum is σ = 36641888. Its totient is φ = 18320940.

The previous prime is 27481409. The next prime is 27481423. The reversal of 27481413 is 31418472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27481413 - 2² = 27481409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27481423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4580233 + ... + 4580238.

It is an arithmetic number, because the mean of its divisors is an integer number (9160472).

Almost surely, 2^27481413 is an apocalyptic number.

It is an amenable number.

27481413 is a deficient number, since it is larger than the sum of its proper divisors (9160475).

27481413 is an equidigital number, since it uses as much as digits as its factorization.

27481413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9160474.

The product of its digits is 5376, while the sum is 30.

The square root of 27481413 is about 5242.2717403813. The cubic root of 27481413 is about 301.7725177548.

Adding to 27481413 its reverse (31418472), we get a palindrome (58899885).

The spelling of 27481413 in words is "twenty-seven million, four hundred eighty-one thousand, four hundred thirteen".