2271788 has 6 divisors (see below), whose sum is σ = 3975636. Its totient is φ = 1135892.

The previous prime is 2271781. The next prime is 2271791. The reversal of 2271788 is 8871722.

It is a super-2 number, since 2×2271788² = 10322041433888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2271781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283970 + ... + 283977.

It is an arithmetic number, because the mean of its divisors is an integer number (662606).

2^2271788 is an apocalyptic number.

It is an amenable number.

2271788 is a deficient number, since it is larger than the sum of its proper divisors (1703848).

2271788 is a wasteful number, since it uses less digits than its factorization.

2271788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567951 (or 567949 counting only the distinct ones).

The product of its digits is 12544, while the sum is 35.

The square root of 2271788 is about 1507.2451691745. The cubic root of 2271788 is about 131.4586799775.

The spelling of 2271788 in words is "two million, two hundred seventy-one thousand, seven hundred eighty-eight".