244138940 has 24 divisors (see below), whose sum is σ = 512985312. Its totient is φ = 97599680.

The previous prime is 244138933. The next prime is 244139003. The reversal of 244138940 is 49831442.

It is a self number, because there is not a number n which added to its sum of digits gives 244138940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67457 + ... + 70983.

It is an arithmetic number, because the mean of its divisors is an integer number (21374388).

Almost surely, 2^244138940 is an apocalyptic number.

244138940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244138940 is an abundant number, since it is smaller than the sum of its proper divisors (268846372).

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

244138940 is a wasteful number, since it uses less digits than its factorization.

244138940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997 (or 6995 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 244138940 is about 15624.9460799070. The cubic root of 244138940 is about 624.9985621300.

The spelling of 244138940 in words is "two hundred forty-four million, one hundred thirty-eight thousand, nine hundred forty".