2271204 has 72 divisors (see below), whose sum is σ = 6482112. Its totient is φ = 665280.

The previous prime is 2271163. The next prime is 2271221. The reversal of 2271204 is 4021722.

2271204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 10659 + ... + 10869.

2^2271204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2271204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3241056).

2271204 is an abundant number, since it is smaller than the sum of its proper divisors (4210908).

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

2271204 is a wasteful number, since it uses less digits than its factorization.

2271204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2271204 is about 1507.0514257981. The cubic root of 2271204 is about 131.4474144826.

Adding to 2271204 its reverse (4021722), we get a palindrome (6292926).

It can be divided in two parts, 227 and 1204, that added together give a triangular number (1431 = T₅₃).

The spelling of 2271204 in words is "two million, two hundred seventy-one thousand, two hundred four".