44531820 has 144 divisors (see below), whose sum is σ = 147420000. Its totient is φ = 10838016.

The previous prime is 44531807. The next prime is 44531821. The reversal of 44531820 is 2813544.

It is not an unprimeable number, because it can be changed into a prime (44531821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98956 + ... + 99404.

It is an arithmetic number, because the mean of its divisors is an integer number (1023750).

Almost surely, 2^44531820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44531820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73710000).

44531820 is an abundant number, since it is smaller than the sum of its proper divisors (102888180).

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

44531820 is a wasteful number, since it uses less digits than its factorization.

44531820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 44531820 is about 6673.2166156959. The cubic root of 44531820 is about 354.4514970679.

The spelling of 44531820 in words is "forty-four million, five hundred thirty-one thousand, eight hundred twenty".