44290638 has 96 divisors (see below), whose sum is σ = 116573184. Its totient is φ = 12340512.

The previous prime is 44290637. The next prime is 44290643. The reversal of 44290638 is 83609244.

It is a happy number.

44290638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×44290638² = 3923321228894088, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44290637) 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 47 ways as a sum of consecutive naturals, for example, 159756 + ... + 160032.

It is an arithmetic number, because the mean of its divisors is an integer number (1214304).

Almost surely, 2^44290638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44290638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58286592).

44290638 is an abundant number, since it is smaller than the sum of its proper divisors (72282546).

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

44290638 is a wasteful number, since it uses less digits than its factorization.

44290638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 44290638 is about 6655.1211859740. The cubic root of 44290638 is about 353.8104414615.

The spelling of 44290638 in words is "forty-four million, two hundred ninety thousand, six hundred thirty-eight".