244390638 has 16 divisors (see below), whose sum is σ = 489197520. Its totient is φ = 81394176.

The previous prime is 244390633. The next prime is 244390649. The reversal of 244390638 is 836093442.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 244390596 and 244390605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244390633) 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, 9433 + ... + 24036.

It is an arithmetic number, because the mean of its divisors is an integer number (30574845).

Almost surely, 2^244390638 is an apocalyptic number.

244390638 is an abundant number, since it is smaller than the sum of its proper divisors (244806882).

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

244390638 is a wasteful number, since it uses less digits than its factorization.

244390638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34691.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 244390638 is about 15632.9983688351. The cubic root of 244390638 is about 625.2132716427.

The spelling of 244390638 in words is "two hundred forty-four million, three hundred ninety thousand, six hundred thirty-eight".