2145726 has 24 divisors (see below), whose sum is σ = 5072184. Its totient is φ = 650160.

The previous prime is 2145721. The next prime is 2145763. The reversal of 2145726 is 6275412.

It is a self number, because there is not a number n which added to its sum of digits gives 2145726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145721) 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 11 ways as a sum of consecutive naturals, for example, 5221 + ... + 5616.

It is an arithmetic number, because the mean of its divisors is an integer number (211341).

2^2145726 is an apocalyptic number.

2145726 is an abundant number, since it is smaller than the sum of its proper divisors (2926458).

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

2145726 is a wasteful number, since it uses less digits than its factorization.

2145726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10856 (or 10853 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2145726 is about 1464.8296829325. The cubic root of 2145726 is about 128.9807074087.

The spelling of 2145726 in words is "two million, one hundred forty-five thousand, seven hundred twenty-six".