2271938 has 4 divisors (see below), whose sum is σ = 3407910. Its totient is φ = 1135968.

The previous prime is 2271937. The next prime is 2271953. The reversal of 2271938 is 8391722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8391722 = 2 ⋅4195861.

It can be written as a sum of positive squares in only one way, i.e., 2024929 + 247009 = 1423^2 + 497^2 .

It is not an unprimeable number, because it can be changed into a prime (2271937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567983 + ... + 567986.

2^2271938 is an apocalyptic number.

2271938 is a deficient number, since it is larger than the sum of its proper divisors (1135972).

2271938 is a wasteful number, since it uses less digits than its factorization.

2271938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135971.

The product of its digits is 6048, while the sum is 32.

The square root of 2271938 is about 1507.2949280085. The cubic root of 2271938 is about 131.4615732005.

The spelling of 2271938 in words is "two million, two hundred seventy-one thousand, nine hundred thirty-eight".