2188785 has 16 divisors (see below), whose sum is σ = 3588480. Its totient is φ = 1138560.

The previous prime is 2188783. The next prime is 2188787. The reversal of 2188785 is 5878812.

2188785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2188783) and next prime (2188787).

It is not a de Polignac number, because 2188785 - 2¹ = 2188783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2188783) 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 15 ways as a sum of consecutive naturals, for example, 1165 + ... + 2394.

It is an arithmetic number, because the mean of its divisors is an integer number (224280).

2^2188785 is an apocalyptic number.

It is an amenable number.

2188785 is a deficient number, since it is larger than the sum of its proper divisors (1399695).

2188785 is a wasteful number, since it uses less digits than its factorization.

2188785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608.

The product of its digits is 35840, while the sum is 39.

The square root of 2188785 is about 1479.4542912845. The cubic root of 2188785 is about 129.8377660657.

The spelling of 2188785 in words is "two million, one hundred eighty-eight thousand, seven hundred eighty-five".