27481401 has 24 divisors (see below), whose sum is σ = 42836040. Its totient is φ = 16912896.

The previous prime is 27481381. The next prime is 27481409. The reversal of 27481401 is 10418472.

It can be written as a sum of positive squares in 4 ways, for example, as 18481401 + 9000000 = 4299^2 + 3000^2 .

It is not a de Polignac number, because 27481401 - 2⁵ = 27481369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27481409) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6415 + ... + 9803.

It is an arithmetic number, because the mean of its divisors is an integer number (1784835).

Almost surely, 2^27481401 is an apocalyptic number.

It is an amenable number.

27481401 is a deficient number, since it is larger than the sum of its proper divisors (15354639).

27481401 is a wasteful number, since it uses less digits than its factorization.

27481401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465 (or 3462 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 27481401 is about 5242.2705958392. The cubic root of 27481401 is about 301.7724738309.

Adding to 27481401 its reverse (10418472), we get a palindrome (37899873).

The spelling of 27481401 in words is "twenty-seven million, four hundred eighty-one thousand, four hundred one".