27461813 has 4 divisors (see below), whose sum is σ = 27659520. Its totient is φ = 27264108.

The previous prime is 27461803. The next prime is 27461831. The reversal of 27461813 is 31816472.

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 a cyclic number.

It is not a de Polignac number, because 27461813 - 2⁸ = 27461557 is a prime.

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 27461813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27461803) 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 3 ways as a sum of consecutive naturals, for example, 98645 + ... + 98922.

It is an arithmetic number, because the mean of its divisors is an integer number (6914880).

Almost surely, 2^27461813 is an apocalyptic number.

It is an amenable number.

27461813 is a deficient number, since it is larger than the sum of its proper divisors (197707).

27461813 is a wasteful number, since it uses less digits than its factorization.

27461813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197706.

The product of its digits is 8064, while the sum is 32.

The square root of 27461813 is about 5240.4019883975. The cubic root of 27461813 is about 301.7007583678.

The spelling of 27461813 in words is "twenty-seven million, four hundred sixty-one thousand, eight hundred thirteen".