44222220 has 96 divisors (see below), whose sum is σ = 157248000. Its totient is φ = 10107072.

The previous prime is 44222209. The next prime is 44222239. The reversal of 44222220 is 2222244.

44222220 is a `hidden beast` number, since 442 + 2 + 2 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 44222193 and 44222202.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2070 + ... + 9629.

It is an arithmetic number, because the mean of its divisors is an integer number (1638000).

Almost surely, 2^44222220 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 44222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78624000).

44222220 is an abundant number, since it is smaller than the sum of its proper divisors (113025780).

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

44222220 is a wasteful number, since it uses less digits than its factorization.

44222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11724 (or 11716 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 44222220 is about 6649.9789473351. The cubic root of 44222220 is about 353.6281645802.

Adding to 44222220 its reverse (2222244), we get a palindrome (46444464).

It can be divided in two parts, 4 and 4222220, that added together give a palindrome (4222224).

The spelling of 44222220 in words is "forty-four million, two hundred twenty-two thousand, two hundred twenty".