4520000 has 70 divisors (see below), whose sum is σ = 11307318. Its totient is φ = 1792000.

The previous prime is 4519997. The next prime is 4520003. The reversal of 4520000 is 254.

It is an interprime number because it is at equal distance from previous prime (4519997) and next prime (4520003).

It can be written as a sum of positive squares in 5 ways, for example, as 3211264 + 1308736 = 1792^2 + 1144^2 .

It is not an unprimeable number, because it can be changed into a prime (4520003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39944 + ... + 40056.

Almost surely, 2^4520000 is an apocalyptic number.

4520000 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 4520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5653659).

4520000 is an abundant number, since it is smaller than the sum of its proper divisors (6787318).

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

4520000 is an equidigital number, since it uses as much as digits as its factorization.

4520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 4520000 is about 2126.0291625469. The cubic root of 4520000 is about 165.3405881890.

Adding to 4520000 its reverse (254), we get a palindrome (4520254).

The spelling of 4520000 in words is "four million, five hundred twenty thousand".