4470640 has 80 divisors (see below), whose sum is σ = 11249280. Its totient is φ = 1648640.

The previous prime is 4470623. The next prime is 4470649. The reversal of 4470640 is 460744.

4470640 = 310² + 311² + ... + 350².

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4470649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95097 + ... + 95143.

It is an arithmetic number, because the mean of its divisors is an integer number (140616).

Almost surely, 2^4470640 is an apocalyptic number.

4470640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4470640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5624640).

4470640 is an abundant number, since it is smaller than the sum of its proper divisors (6778640).

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

4470640 is a wasteful number, since it uses less digits than its factorization.

4470640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 4470640 is about 2114.3888005757. The cubic root of 4470640 is about 164.7365247110.

The spelling of 4470640 in words is "four million, four hundred seventy thousand, six hundred forty".