2185470 has 48 divisors (see below), whose sum is σ = 6495840. Its totient is φ = 499392.

The previous prime is 2185439. The next prime is 2185471. The reversal of 2185470 is 745812.

2185470 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

2185470 is strictly pandigital in base 8.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185471) 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, 1105 + ... + 2364.

It is an arithmetic number, because the mean of its divisors is an integer number (135330).

2^2185470 is an apocalyptic number.

2185470 is an abundant number, since it is smaller than the sum of its proper divisors (4310370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2185470 is a wasteful number, since it uses less digits than its factorization.

2185470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489 (or 3486 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 2185470 is about 1478.3335212326. Note that the first 3 decimals coincide. The cubic root of 2185470 is about 129.7721848308.

It can be divided in two parts, 21 and 85470, that added together give a triangular number (85491 = T₄₁₃).

The spelling of 2185470 in words is "two million, one hundred eighty-five thousand, four hundred seventy".