44721320 has 48 divisors (see below), whose sum is σ = 117056340. Its totient is φ = 15332352.

The previous prime is 44721319. The next prime is 44721323. The reversal of 44721320 is 2312744.

It can be written as a sum of positive squares in 2 ways, for example, as 40934404 + 3786916 = 6398^2 + 1946^2 .

It is not an unprimeable number, because it can be changed into a prime (44721323) 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 11 ways as a sum of consecutive naturals, for example, 9449 + ... + 13368.

Almost surely, 2^44721320 is an apocalyptic number.

44721320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44721320 is an abundant number, since it is smaller than the sum of its proper divisors (72335020).

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

44721320 is a wasteful number, since it uses less digits than its factorization.

44721320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22842 (or 22831 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 44721320 is about 6687.4000927117. The cubic root of 44721320 is about 354.9535613394.

The spelling of 44721320 in words is "forty-four million, seven hundred twenty-one thousand, three hundred twenty".