27799481 has 4 divisors (see below), whose sum is σ = 27813492. Its totient is φ = 27785472.

The previous prime is 27799459. The next prime is 27799483. The reversal of 27799481 is 18499772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3936256 + 23863225 = 1984^2 + 4885^2 .

It is a cyclic number.

It is not a de Polignac number, because 27799481 - 2¹⁰ = 27798457 is a prime.

It is a super-2 number, since 2×27799481² = 1545622287738722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27799483) 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, 3416 + ... + 8201.

It is an arithmetic number, because the mean of its divisors is an integer number (6953373).

Almost surely, 2^27799481 is an apocalyptic number.

It is an amenable number.

27799481 is a deficient number, since it is larger than the sum of its proper divisors (14011).

27799481 is a wasteful number, since it uses less digits than its factorization.

27799481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14010.

The product of its digits is 254016, while the sum is 47.

The square root of 27799481 is about 5272.5213133756. The cubic root of 27799481 is about 302.9322863496.

The spelling of 27799481 in words is "twenty-seven million, seven hundred ninety-nine thousand, four hundred eighty-one".