2291746 has 4 divisors (see below), whose sum is σ = 3437622. Its totient is φ = 1145872.

The previous prime is 2291717. The next prime is 2291747. The reversal of 2291746 is 6471922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6471922 = 2 ⋅3235961.

It can be written as a sum of positive squares in only one way, i.e., 2030625 + 261121 = 1425^2 + 511^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2291747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572935 + ... + 572938.

2^2291746 is an apocalyptic number.

2291746 is a deficient number, since it is larger than the sum of its proper divisors (1145876).

2291746 is a wasteful number, since it uses less digits than its factorization.

2291746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145875.

The product of its digits is 6048, while the sum is 31.

The square root of 2291746 is about 1513.8513797596. The cubic root of 2291746 is about 131.8425195721.

The spelling of 2291746 in words is "two million, two hundred ninety-one thousand, seven hundred forty-six".