2113722 has 32 divisors (see below), whose sum is σ = 5060160. Its totient is φ = 650160.

The previous prime is 2113703. The next prime is 2113733. The reversal of 2113722 is 2273112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2113695 and 2113704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804 + ... + 2207.

It is an arithmetic number, because the mean of its divisors is an integer number (158130).

2^2113722 is an apocalyptic number.

2113722 is an abundant number, since it is smaller than the sum of its proper divisors (2946438).

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

2113722 is a wasteful number, since it uses less digits than its factorization.

2113722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035 (or 3029 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 2113722 is about 1453.8645053787. The cubic root of 2113722 is about 128.3362335133.

Adding to 2113722 its reverse (2273112), we get a palindrome (4386834).

The spelling of 2113722 in words is "two million, one hundred thirteen thousand, seven hundred twenty-two".