27948481 has 4 divisors (see below), whose sum is σ = 30489264. Its totient is φ = 25407700.

The previous prime is 27948463. The next prime is 27948499. The reversal of 27948481 is 18484972.

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 an interprime number because it is at equal distance from previous prime (27948463) and next prime (27948499).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27948481 is a prime.

It is a super-2 number, since 2×27948481² = 1562235180414722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27948461) 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 3 ways as a sum of consecutive naturals, for example, 1270375 + ... + 1270396.

It is an arithmetic number, because the mean of its divisors is an integer number (7622316).

Almost surely, 2^27948481 is an apocalyptic number.

It is an amenable number.

27948481 is a deficient number, since it is larger than the sum of its proper divisors (2540783).

27948481 is a wasteful number, since it uses less digits than its factorization.

27948481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540782.

The product of its digits is 129024, while the sum is 43.

The square root of 27948481 is about 5286.6322928685. The cubic root of 27948481 is about 303.4725423367.

The spelling of 27948481 in words is "twenty-seven million, nine hundred forty-eight thousand, four hundred eighty-one".