27948819 has 4 divisors (see below), whose sum is σ = 37265096. Its totient is φ = 18632544.

The previous prime is 27948803. The next prime is 27948863. The reversal of 27948819 is 91884972.

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

It is not a de Polignac number, because 27948819 - 2⁴ = 27948803 is a prime.

It is a super-2 number, since 2×27948819² = 1562272966989522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27948889) 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, 4658134 + ... + 4658139.

It is an arithmetic number, because the mean of its divisors is an integer number (9316274).

Almost surely, 2^27948819 is an apocalyptic number.

27948819 is a deficient number, since it is larger than the sum of its proper divisors (9316277).

27948819 is an equidigital number, since it uses as much as digits as its factorization.

27948819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9316276.

The product of its digits is 290304, while the sum is 48.

The square root of 27948819 is about 5286.6642601928. The cubic root of 27948819 is about 303.4737656985.

The spelling of 27948819 in words is "twenty-seven million, nine hundred forty-eight thousand, eight hundred nineteen".