2291826 has 16 divisors (see below), whose sum is σ = 4670784. Its totient is φ = 749424.

The previous prime is 2291803. The next prime is 2291827. The reversal of 2291826 is 6281922.

2291826 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2291793 and 2291802.

It is not an unprimeable number, because it can be changed into a prime (2291827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3286 + ... + 3921.

It is an arithmetic number, because the mean of its divisors is an integer number (291924).

2^2291826 is an apocalyptic number.

2291826 is an abundant number, since it is smaller than the sum of its proper divisors (2378958).

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

2291826 is a wasteful number, since it uses less digits than its factorization.

2291826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7265.

The product of its digits is 3456, while the sum is 30.

The square root of 2291826 is about 1513.8778022020. The cubic root of 2291826 is about 131.8440536686.

The spelling of 2291826 in words is "two million, two hundred ninety-one thousand, eight hundred twenty-six".