42238644 has 24 divisors (see below), whose sum is σ = 112636608. Its totient is φ = 12068160.

The previous prime is 42238643. The next prime is 42238661. The reversal of 42238644 is 44683224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42238643) 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, 251337 + ... + 251504.

It is an arithmetic number, because the mean of its divisors is an integer number (4693192).

Almost surely, 2^42238644 is an apocalyptic number.

It is an amenable number.

42238644 is an abundant number, since it is smaller than the sum of its proper divisors (70397964).

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

42238644 is a wasteful number, since it uses less digits than its factorization.

42238644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502855 (or 502853 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

The square root of 42238644 is about 6499.1264028329. The cubic root of 42238644 is about 348.2597809237.

The spelling of 42238644 in words is "forty-two million, two hundred thirty-eight thousand, six hundred forty-four".