27802138 has 32 divisors (see below), whose sum is σ = 51682176. Its totient is φ = 10922688.

The previous prime is 27802129. The next prime is 27802139. The reversal of 27802138 is 83120872.

It is not an unprimeable number, because it can be changed into a prime (27802139) 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 15 ways as a sum of consecutive naturals, for example, 31045 + ... + 31927.

It is an arithmetic number, because the mean of its divisors is an integer number (1615068).

Almost surely, 2^27802138 is an apocalyptic number.

27802138 is a deficient number, since it is larger than the sum of its proper divisors (23880038).

27802138 is a wasteful number, since it uses less digits than its factorization.

27802138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 27802138 is about 5272.7732740940. The cubic root of 27802138 is about 302.9419371946.

The spelling of 27802138 in words is "twenty-seven million, eight hundred two thousand, one hundred thirty-eight".