4304640 has 144 divisors (see below), whose sum is σ = 14716800. Its totient is φ = 1069056.

The previous prime is 4304633. The next prime is 4304669. The reversal of 4304640 is 464034.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72931 + ... + 72989.

It is an arithmetic number, because the mean of its divisors is an integer number (102200).

Almost surely, 2^4304640 is an apocalyptic number.

4304640 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 4304640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7358400).

4304640 is an abundant number, since it is smaller than the sum of its proper divisors (10412160).

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

4304640 is a wasteful number, since it uses less digits than its factorization.

4304640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4304640 is about 2074.7626370262. The cubic root of 4304640 is about 162.6718025193.

Adding to 4304640 its reverse (464034), we get a palindrome (4768674).

Subtracting from 4304640 its reverse (464034), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 4304640 in words is "four million, three hundred four thousand, six hundred forty".