2271904 has 12 divisors (see below), whose sum is σ = 4472874. Its totient is φ = 1135936.

The previous prime is 2271901. The next prime is 2271923. The reversal of 2271904 is 4091722.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 21904 = 1500^2 + 148^2 .

It is not an unprimeable number, because it can be changed into a prime (2271901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35467 + ... + 35530.

2^2271904 is an apocalyptic number.

It is an amenable number.

2271904 is a deficient number, since it is larger than the sum of its proper divisors (2200970).

2271904 is an equidigital number, since it uses as much as digits as its factorization.

2271904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71007 (or 70999 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2271904 is about 1507.2836494834. The cubic root of 2271904 is about 131.4609174145.

The spelling of 2271904 in words is "two million, two hundred seventy-one thousand, nine hundred four".