2185402 has 12 divisors (see below), whose sum is σ = 3349710. Its totient is φ = 1069328.

The previous prime is 2185387. The next prime is 2185409. The reversal of 2185402 is 2045812.

It can be written as a sum of positive squares in 3 ways, for example, as 1990921 + 194481 = 1411^2 + 441^2 .

It is not an unprimeable number, because it can be changed into a prime (2185409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5424 + ... + 5812.

2^2185402 is an apocalyptic number.

2185402 is a deficient number, since it is larger than the sum of its proper divisors (1164308).

2185402 is an equidigital number, since it uses as much as digits as its factorization.

2185402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2185402 is about 1478.3105221840. The cubic root of 2185402 is about 129.7708388808.

The spelling of 2185402 in words is "two million, one hundred eighty-five thousand, four hundred two".