27772955 has 12 divisors (see below), whose sum is σ = 38769120. Its totient is φ = 19044144.

The previous prime is 27772933. The next prime is 27772961. The reversal of 27772955 is 55927772.

It is not a de Polignac number, because 27772955 - 2¹⁶ = 27707419 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 56435 + ... + 56924.

It is an arithmetic number, because the mean of its divisors is an integer number (3230760).

Almost surely, 2^27772955 is an apocalyptic number.

27772955 is a deficient number, since it is larger than the sum of its proper divisors (10996165).

27772955 is a wasteful number, since it uses less digits than its factorization.

27772955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113378 (or 113371 counting only the distinct ones).

The product of its digits is 308700, while the sum is 44.

The square root of 27772955 is about 5270.0052182137. The cubic root of 27772955 is about 302.8359039866.

The spelling of 27772955 in words is "twenty-seven million, seven hundred seventy-two thousand, nine hundred fifty-five".