44540020 has 72 divisors (see below), whose sum is σ = 111234816. Its totient is φ = 14930496.

The previous prime is 44540011. The next prime is 44540021. The reversal of 44540020 is 2004544.

It is a self number, because there is not a number n which added to its sum of digits gives 44540020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44540021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45577 + ... + 46543.

It is an arithmetic number, because the mean of its divisors is an integer number (1544928).

Almost surely, 2^44540020 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 44540020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55617408).

44540020 is an abundant number, since it is smaller than the sum of its proper divisors (66694796).

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

44540020 is a wasteful number, since it uses less digits than its factorization.

44540020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 44540020 is about 6673.8309837754. The cubic root of 44540020 is about 354.4732517285.

Adding to 44540020 its reverse (2004544), we get a palindrome (46544564).

The spelling of 44540020 in words is "forty-four million, five hundred forty thousand, twenty".