2143470 has 64 divisors (see below), whose sum is σ = 6013440. Its totient is φ = 478848.

The previous prime is 2143469. The next prime is 2143481. The reversal of 2143470 is 743412.

2143470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12304 + ... + 12476.

It is an arithmetic number, because the mean of its divisors is an integer number (93960).

2^2143470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3006720).

2143470 is an abundant number, since it is smaller than the sum of its proper divisors (3869970).

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

2143470 is a wasteful number, since it uses less digits than its factorization.

2143470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 2143470 is about 1464.0594250235. The cubic root of 2143470 is about 128.9354884457.

Adding to 2143470 its reverse (743412), we get a palindrome (2886882).

The spelling of 2143470 in words is "two million, one hundred forty-three thousand, four hundred seventy".