44139620 has 48 divisors (see below), whose sum is σ = 106998528. Its totient is φ = 14981760.

The previous prime is 44139617. The next prime is 44139637. The reversal of 44139620 is 2693144.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12890 + ... + 15950.

It is an arithmetic number, because the mean of its divisors is an integer number (2229136).

Almost surely, 2^44139620 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 44139620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53499264).

44139620 is an abundant number, since it is smaller than the sum of its proper divisors (62858908).

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

44139620 is a wasteful number, since it uses less digits than its factorization.

44139620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180 (or 3178 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 44139620 is about 6643.7654985708. The cubic root of 44139620 is about 353.4078538283.

The spelling of 44139620 in words is "forty-four million, one hundred thirty-nine thousand, six hundred twenty".