44721620 has 12 divisors (see below), whose sum is σ = 93915444. Its totient is φ = 17888640.

The previous prime is 44721617. The next prime is 44721631. The reversal of 44721620 is 2612744.

44721620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9461776 + 35259844 = 3076^2 + 5938^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 44721620.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118021 + ... + 1118060.

It is an arithmetic number, because the mean of its divisors is an integer number (7826287).

Almost surely, 2^44721620 is an apocalyptic number.

It is an amenable number.

44721620 is an abundant number, since it is smaller than the sum of its proper divisors (49193824).

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

44721620 is a wasteful number, since it uses less digits than its factorization.

44721620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236090 (or 2236088 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 44721620 is about 6687.4225229157. The cubic root of 44721620 is about 354.9543550386.

The spelling of 44721620 in words is "forty-four million, seven hundred twenty-one thousand, six hundred twenty".