44220520 has 16 divisors (see below), whose sum is σ = 99496260. Its totient is φ = 17688192.

The previous prime is 44220499. The next prime is 44220521. The reversal of 44220520 is 2502244.

It can be written as a sum of positive squares in 2 ways, for example, as 41654116 + 2566404 = 6454^2 + 1602^2 .

It is not an unprimeable number, because it can be changed into a prime (44220521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552717 + ... + 552796.

Almost surely, 2^44220520 is an apocalyptic number.

44220520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44220520 is an abundant number, since it is smaller than the sum of its proper divisors (55275740).

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

44220520 is a wasteful number, since it uses less digits than its factorization.

44220520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105524 (or 1105520 counting only the distinct ones).

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

The square root of 44220520 is about 6649.8511261531. The cubic root of 44220520 is about 353.6236331058.

Adding to 44220520 its reverse (2502244), we get a palindrome (46722764).

It can be divided in two parts, 442205 and 20, that added together give a square (442225 = 665²).

The spelling of 44220520 in words is "forty-four million, two hundred twenty thousand, five hundred twenty".