1244004400 has 30 divisors (see below), whose sum is σ = 2988721532. Its totient is φ = 497601600.

The previous prime is 1244004361. The next prime is 1244004401. The reversal of 1244004400 is 44004421.

It is not an unprimeable number, because it can be changed into a prime (1244004401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1554606 + ... + 1555405.

Almost surely, 2^1244004400 is an apocalyptic number.

1244004400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244004400 is an abundant number, since it is smaller than the sum of its proper divisors (1744717132).

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

1244004400 is a wasteful number, since it uses less digits than its factorization.

1244004400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110029 (or 3110018 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1244004400 is about 35270.4465523191. The cubic root of 1244004400 is about 1075.4923002045.

Adding to 1244004400 its reverse (44004421), we get a palindrome (1288008821).

The spelling of 1244004400 in words is "one billion, two hundred forty-four million, four thousand, four hundred".