4500040 has 16 divisors (see below), whose sum is σ = 10125180. Its totient is φ = 1800000.

The previous prime is 4500029. The next prime is 4500043. The reversal of 4500040 is 400054.

It can be written as a sum of positive squares in 2 ways, for example, as 4072324 + 427716 = 2018^2 + 654^2 .

It is not an unprimeable number, because it can be changed into a prime (4500043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56211 + ... + 56290.

Almost surely, 2^4500040 is an apocalyptic number.

4500040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4500040 is an abundant number, since it is smaller than the sum of its proper divisors (5625140).

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

4500040 is a wasteful number, since it uses less digits than its factorization.

4500040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112512 (or 112508 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 4500040 is about 2121.3297716291. The cubic root of 4500040 is about 165.0968516177.

Adding to 4500040 its reverse (400054), we get a palindrome (4900094).

The spelling of 4500040 in words is "four million, five hundred thousand, forty".