27773973 has 12 divisors (see below), whose sum is σ = 40180140. Its totient is φ = 18487296.

The previous prime is 27773957. The next prime is 27774023. The reversal of 27773973 is 37937772.

It can be written as a sum of positive squares in 2 ways, for example, as 17489124 + 10284849 = 4182^2 + 3207^2 .

It is not a de Polignac number, because 27773973 - 2⁴ = 27773957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27773773) 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 11 ways as a sum of consecutive naturals, for example, 4915 + ... + 8927.

It is an arithmetic number, because the mean of its divisors is an integer number (3348345).

Almost surely, 2^27773973 is an apocalyptic number.

It is an amenable number.

27773973 is a deficient number, since it is larger than the sum of its proper divisors (12406167).

27773973 is a wasteful number, since it uses less digits than its factorization.

27773973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788 (or 4785 counting only the distinct ones).

The product of its digits is 388962, while the sum is 45.

The square root of 27773973 is about 5270.1018016733. The cubic root of 27773973 is about 302.8396040272.

The spelling of 27773973 in words is "twenty-seven million, seven hundred seventy-three thousand, nine hundred seventy-three".