4550040 has 128 divisors (see below), whose sum is σ = 16588800. Its totient is φ = 1100160.

The previous prime is 4550027. The next prime is 4550059. The reversal of 4550040 is 400554.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4549995 and 4550022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11689 + ... + 12071.

It is an arithmetic number, because the mean of its divisors is an integer number (129600).

Almost surely, 2^4550040 is an apocalyptic number.

4550040 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 4550040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8294400).

4550040 is an abundant number, since it is smaller than the sum of its proper divisors (12038760).

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

4550040 is a wasteful number, since it uses less digits than its factorization.

4550040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 4550040 is about 2133.0822768942. The cubic root of 4550040 is about 165.7060652170.

Adding to 4550040 its reverse (400554), we get a palindrome (4950594).

The spelling of 4550040 in words is "four million, five hundred fifty thousand, forty".