27221373 has 8 divisors (see below), whose sum is σ = 40328000. Its totient is φ = 18147564.

The previous prime is 27221353. The next prime is 27221393. The reversal of 27221373 is 37312272.

It is a happy number.

27221373 is a `hidden beast` number, since 272 + 21 + 373 = 666.

It is an interprime number because it is at equal distance from previous prime (27221353) and next prime (27221393).

It is not a de Polignac number, because 27221373 - 2⁶ = 27221309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1008199 = 27221373 / (2 + 7 + 2 + 2 + 1 + 3 + 7 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27221303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504073 + ... + 504126.

It is an arithmetic number, because the mean of its divisors is an integer number (5041000).

Almost surely, 2^27221373 is an apocalyptic number.

It is an amenable number.

27221373 is a deficient number, since it is larger than the sum of its proper divisors (13106627).

27221373 is a wasteful number, since it uses less digits than its factorization.

27221373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008208 (or 1008202 counting only the distinct ones).

The product of its digits is 3528, while the sum is 27.

The square root of 27221373 is about 5217.4105646384. The cubic root of 27221373 is about 300.8176693646.

It can be divided in two parts, 2722 and 1373, that added together give a triangular number (4095 = T₉₀).

The spelling of 27221373 in words is "twenty-seven million, two hundred twenty-one thousand, three hundred seventy-three".