2291716 has 12 divisors (see below), whose sum is σ = 4583488. Its totient is φ = 982152.

The previous prime is 2291699. The next prime is 2291717. The reversal of 2291716 is 6171922.

It is a happy number.

2291716 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 81847 = 2291716 / (2 + 2 + 9 + 1 + 7 + 1 + 6).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2291717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40896 + ... + 40951.

2^2291716 is an apocalyptic number.

It is an amenable number.

2291716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2291716 is a wasteful number, since it uses less digits than its factorization.

2291716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81858 (or 81856 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 2291716 is about 1513.8414712248. The cubic root of 2291716 is about 131.8419442767.

The spelling of 2291716 in words is "two million, two hundred ninety-one thousand, seven hundred sixteen".