2145786 has 16 divisors (see below), whose sum is σ = 4391904. Its totient is φ = 698544.

The previous prime is 2145779. The next prime is 2145821. The reversal of 2145786 is 6875412.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3901 + ... + 4416.

It is an arithmetic number, because the mean of its divisors is an integer number (274494).

2^2145786 is an apocalyptic number.

2145786 is an abundant number, since it is smaller than the sum of its proper divisors (2246118).

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

2145786 is a wasteful number, since it uses less digits than its factorization.

2145786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8365.

The product of its digits is 13440, while the sum is 33.

The square root of 2145786 is about 1464.8501629860. The cubic root of 2145786 is about 128.9819096079.

The spelling of 2145786 in words is "two million, one hundred forty-five thousand, seven hundred eighty-six".