244638 has 12 divisors (see below), whose sum is σ = 530088. Its totient is φ = 81540.

The previous prime is 244637. The next prime is 244639. The reversal of 244638 is 836442.

244638 is a `hidden beast` number, since 24 + 4 + 638 = 666.

It is an interprime number because it is at equal distance from previous prime (244637) and next prime (244639).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 11.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6778 + ... + 6813.

It is an arithmetic number, because the mean of its divisors is an integer number (44174).

2²⁴⁴⁶³⁸ is an apocalyptic number.

244638 is an abundant number, since it is smaller than the sum of its proper divisors (285450).

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

244638 is a wasteful number, since it uses less digits than its factorization.

244638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13599 (or 13596 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 244638 is about 494.6089364336. The cubic root of 244638 is about 62.5424138772.

The spelling of 244638 in words is "two hundred forty-four thousand, six hundred thirty-eight".