44421730 has 16 divisors (see below), whose sum is σ = 80237304. Its totient is φ = 17706880.

The previous prime is 44421691. The next prime is 44421733. The reversal of 44421730 is 3712444.

It can be written as a sum of positive squares in 4 ways, for example, as 43283241 + 1138489 = 6579^2 + 1067^2 .

It is a junction number, because it is equal to n+sod(n) for n = 44421695 and 44421704.

It is not an unprimeable number, because it can be changed into a prime (44421733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4651 + ... + 10510.

Almost surely, 2^44421730 is an apocalyptic number.

44421730 is a deficient number, since it is larger than the sum of its proper divisors (35815574).

44421730 is a wasteful number, since it uses less digits than its factorization.

44421730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15461.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 44421730 is about 6664.9628656130. The cubic root of 44421730 is about 354.1591685302.

The spelling of 44421730 in words is "forty-four million, four hundred twenty-one thousand, seven hundred thirty".