44242220 has 24 divisors (see below), whose sum is σ = 101355408. Its totient is φ = 16088000.

The previous prime is 44242207. The next prime is 44242223. The reversal of 44242220 is 2224244.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 44242192 and 44242201.

It is not an unprimeable number, because it can be changed into a prime (44242223) 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 7 ways as a sum of consecutive naturals, for example, 100331 + ... + 100770.

It is an arithmetic number, because the mean of its divisors is an integer number (4223142).

Almost surely, 2^44242220 is an apocalyptic number.

It is an amenable number.

44242220 is an abundant number, since it is smaller than the sum of its proper divisors (57113188).

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

44242220 is a wasteful number, since it uses less digits than its factorization.

44242220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201121 (or 201119 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 44242220 is about 6651.4825415091. The cubic root of 44242220 is about 353.6814673267.

Adding to 44242220 its reverse (2224244), we get a palindrome (46466464).

The spelling of 44242220 in words is "forty-four million, two hundred forty-two thousand, two hundred twenty".