244421040 has 40 divisors (see below), whose sum is σ = 757705968. Its totient is φ = 65178880.

The previous prime is 244421029. The next prime is 244421041. The reversal of 244421040 is 40124442.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 244420998 and 244421016.

It is not an unprimeable number, because it can be changed into a prime (244421041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508971 + ... + 509450.

Almost surely, 2^244421040 is an apocalyptic number.

244421040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244421040 is an abundant number, since it is smaller than the sum of its proper divisors (513284928).

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

244421040 is a wasteful number, since it uses less digits than its factorization.

244421040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018437 (or 1018431 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 244421040 is about 15633.9707048465. The cubic root of 244421040 is about 625.2391959115.

Adding to 244421040 its reverse (40124442), we get a palindrome (284545482).

The spelling of 244421040 in words is "two hundred forty-four million, four hundred twenty-one thousand, forty".