2109285 has 24 divisors (see below), whose sum is σ = 3850080. Its totient is φ = 1065312.

The previous prime is 2109277. The next prime is 2109287. The reversal of 2109285 is 5829012.

It is not a de Polignac number, because 2109285 - 2³ = 2109277 is a prime.

It is a super-2 number, since 2×2109285² = 8898166422450, which contains 22 as substring.

2109285 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 379 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (160420).

2^2109285 is an apocalyptic number.

It is an amenable number.

2109285 is a deficient number, since it is larger than the sum of its proper divisors (1740795).

2109285 is a wasteful number, since it uses less digits than its factorization.

2109285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497 (or 2494 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2109285 is about 1452.3377706305. The cubic root of 2109285 is about 128.2463720005.

The spelling of 2109285 in words is "two million, one hundred nine thousand, two hundred eighty-five".