27722273 has 12 divisors (see below), whose sum is σ = 29987748. Its totient is φ = 25608960.

The previous prime is 27722269. The next prime is 27722281. The reversal of 27722273 is 37222772.

It can be written as a sum of positive squares in 2 ways, for example, as 1014049 + 26708224 = 1007^2 + 5168^2 .

It is not a de Polignac number, because 27722273 - 2² = 27722269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27722203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13865 + ... + 15737.

It is an arithmetic number, because the mean of its divisors is an integer number (2498979).

Almost surely, 2^27722273 is an apocalyptic number.

It is an amenable number.

27722273 is a deficient number, since it is larger than the sum of its proper divisors (2265475).

27722273 is a wasteful number, since it uses less digits than its factorization.

27722273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1933 counting only the distinct ones).

The product of its digits is 16464, while the sum is 32.

The square root of 27722273 is about 5265.1944883356. The cubic root of 27722273 is about 302.6515798844.

The spelling of 27722273 in words is "twenty-seven million, seven hundred twenty-two thousand, two hundred seventy-three".