244645072440 has 128 divisors (see below), whose sum is σ = 773428953600. Its totient is φ = 61784307200.

The previous prime is 244645072423. The next prime is 244645072459. The reversal of 244645072440 is 44270546442.

It is a super-2 number, since 2×244645072440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 244645072392 and 244645072401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160050 + ... + 717569.

It is an arithmetic number, because the mean of its divisors is an integer number (6042413700).

Almost surely, 2^244645072440 is an apocalyptic number.

244645072440 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 244645072440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386714476800).

244645072440 is an abundant number, since it is smaller than the sum of its proper divisors (528783881160).

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

244645072440 is a wasteful number, since it uses less digits than its factorization.

244645072440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877757 (or 877753 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 42.

It can be divided in two parts, 2446450 and 72440, that added together give a triangular number (2518890 = T₂₂₄₄).

The spelling of 244645072440 in words is "two hundred forty-four billion, six hundred forty-five million, seventy-two thousand, four hundred forty".