2404004400 has 240 divisors, whose sum is σ = 9779136000. Its totient is φ = 549469440.

The previous prime is 2404004389. The next prime is 2404004401. The reversal of 2404004400 is 44004042.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is not an unprimeable number, because it can be changed into a prime (2404004401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59701 + ... + 91499.

It is an arithmetic number, because the mean of its divisors is an integer number (40746400).

Almost surely, 2^2404004400 is an apocalyptic number.

2404004400 is a gapful number since it is divisible by the number (20) 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 2404004400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4889568000).

2404004400 is an abundant number, since it is smaller than the sum of its proper divisors (7375131600).

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

2404004400 is a wasteful number, since it uses less digits than its factorization.

2404004400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31833 (or 31816 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 2404004400 is about 49030.6475584404. The cubic root of 2404004400 is about 1339.6101189928.

Adding to 2404004400 its reverse (44004042), we get a palindrome (2448008442).

The spelling of 2404004400 in words is "two billion, four hundred four million, four thousand, four hundred".