2138285 has 8 divisors (see below), whose sum is σ = 2614680. Its totient is φ = 1678144.

The previous prime is 2138263. The next prime is 2138291. The reversal of 2138285 is 5828312.

It can be written as a sum of positive squares in 4 ways, for example, as 9604 + 2128681 = 98^2 + 1459^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2138285 - 2⁶ = 2138221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3770 + ... + 4299.

It is an arithmetic number, because the mean of its divisors is an integer number (326835).

2^2138285 is an apocalyptic number.

It is an amenable number.

2138285 is a deficient number, since it is larger than the sum of its proper divisors (476395).

2138285 is an equidigital number, since it uses as much as digits as its factorization.

2138285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127.

The product of its digits is 3840, while the sum is 29.

The square root of 2138285 is about 1462.2875914129. The cubic root of 2138285 is about 128.8314406033.

The spelling of 2138285 in words is "two million, one hundred thirty-eight thousand, two hundred eighty-five".