44022720 has 112 divisors (see below), whose sum is σ = 159763968. Its totient is φ = 10060800.

The previous prime is 44022683. The next prime is 44022739. The reversal of 44022720 is 2722044.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 3445 + ... + 9995.

It is an arithmetic number, because the mean of its divisors is an integer number (1426464).

Almost surely, 2^44022720 is an apocalyptic number.

44022720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44022720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79881984).

44022720 is an abundant number, since it is smaller than the sum of its proper divisors (115741248).

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

44022720 is a wasteful number, since it uses less digits than its factorization.

44022720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6578 (or 6568 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 44022720 is about 6634.9619441260. The cubic root of 44022720 is about 353.0955878602.

Adding to 44022720 its reverse (2722044), we get a palindrome (46744764).

The spelling of 44022720 in words is "forty-four million, twenty-two thousand, seven hundred twenty".