4520640 has 112 divisors (see below), whose sum is σ = 15252192. Its totient is φ = 1130496.

The previous prime is 4520629. The next prime is 4520647. The reversal of 4520640 is 460254.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4520647) 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, 16182 + ... + 16458.

Almost surely, 2^4520640 is an apocalyptic number.

4520640 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 4520640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7626096).

4520640 is an abundant number, since it is smaller than the sum of its proper divisors (10731552).

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

4520640 is a wasteful number, since it uses less digits than its factorization.

4520640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 4520640 is about 2126.1796725583. The cubic root of 4520640 is about 165.3483915063.

Adding to 4520640 its reverse (460254), we get a palindrome (4980894).

The spelling of 4520640 in words is "four million, five hundred twenty thousand, six hundred forty".