2140470 has 48 divisors (see below), whose sum is σ = 5896800. Its totient is φ = 536832.

The previous prime is 2140459. The next prime is 2140477. The reversal of 2140470 is 740412.

It is a happy number.

It is a super-2 number, since 2×2140470² = 9163223641800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140477) 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, 831 + ... + 2229.

It is an arithmetic number, because the mean of its divisors is an integer number (122850).

2^2140470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2140470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2948400).

2140470 is an abundant number, since it is smaller than the sum of its proper divisors (3756330).

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

2140470 is a wasteful number, since it uses less digits than its factorization.

2140470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429 (or 1426 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2140470 is about 1463.0345177063. The cubic root of 2140470 is about 128.8753076697.

Adding to 2140470 its reverse (740412), we get a palindrome (2880882).

The spelling of 2140470 in words is "two million, one hundred forty thousand, four hundred seventy".