2291626 has 8 divisors (see below), whose sum is σ = 3510720. Its totient is φ = 1121388.

The previous prime is 2291623. The next prime is 2291629. The reversal of 2291626 is 6261922.

It is an interprime number because it is at equal distance from previous prime (2291623) and next prime (2291629).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2291594 and 2291603.

It is not an unprimeable number, because it can be changed into a prime (2291623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12096 + ... + 12283.

It is an arithmetic number, because the mean of its divisors is an integer number (438840).

2^2291626 is an apocalyptic number.

2291626 is a deficient number, since it is larger than the sum of its proper divisors (1219094).

2291626 is a wasteful number, since it uses less digits than its factorization.

2291626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24428.

The product of its digits is 2592, while the sum is 28.

The square root of 2291626 is about 1513.8117452312. The cubic root of 2291626 is about 131.8402183603.

The spelling of 2291626 in words is "two million, two hundred ninety-one thousand, six hundred twenty-six".