2820189 has 8 divisors (see below), whose sum is σ = 3958240. Its totient is φ = 1781136.

The previous prime is 2820179. The next prime is 2820193. The reversal of 2820189 is 9810282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2820189 - 2⁸ = 2819933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24682 + ... + 24795.

It is an arithmetic number, because the mean of its divisors is an integer number (494780).

2^2820189 is an apocalyptic number.

It is an amenable number.

2820189 is a deficient number, since it is larger than the sum of its proper divisors (1138051).

2820189 is a wasteful number, since it uses less digits than its factorization.

2820189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49499.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 2820189 is about 1679.3418353629. The cubic root of 2820189 is about 141.2839206393.

The spelling of 2820189 in words is "two million, eight hundred twenty thousand, one hundred eighty-nine".