2271996 has 48 divisors (see below), whose sum is σ = 5975200. Its totient is φ = 746496.

The previous prime is 2271989. The next prime is 2272013. The reversal of 2271996 is 6991722.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2271996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11676 + ... + 11868.

2^2271996 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 2271996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2987600).

2271996 is an abundant number, since it is smaller than the sum of its proper divisors (3703204).

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

2271996 is a wasteful number, since it uses less digits than its factorization.

2271996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 307 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 2271996 is about 1507.3141676505. The cubic root of 2271996 is about 131.4626918793.

The spelling of 2271996 in words is "two million, two hundred seventy-one thousand, nine hundred ninety-six".