27922638 has 16 divisors (see below), whose sum is σ = 55912320. Its totient is φ = 9296376.

The previous prime is 27922637. The next prime is 27922651. The reversal of 27922638 is 83622972.

It is a junction number, because it is equal to n+sod(n) for n = 27922596 and 27922605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27922637) 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 7 ways as a sum of consecutive naturals, for example, 3831 + ... + 8397.

It is an arithmetic number, because the mean of its divisors is an integer number (3494520).

Almost surely, 2^27922638 is an apocalyptic number.

27922638 is an abundant number, since it is smaller than the sum of its proper divisors (27989682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27922638 is a wasteful number, since it uses less digits than its factorization.

27922638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5591.

The product of its digits is 72576, while the sum is 39.

The square root of 27922638 is about 5284.1875439844. The cubic root of 27922638 is about 303.3789766145.

The spelling of 27922638 in words is "twenty-seven million, nine hundred twenty-two thousand, six hundred thirty-eight".