440328730 has 16 divisors (see below), whose sum is σ = 839215080. Its totient is φ = 165770752.

The previous prime is 440328727. The next prime is 440328731. The reversal of 440328730 is 37823044.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 313608681 + 126720049 = 17709^2 + 11257^2 .

It is a junction number, because it is equal to n+sod(n) for n = 440328692 and 440328701.

It is not an unprimeable number, because it can be changed into a prime (440328731) 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, 1294915 + ... + 1295254.

Almost surely, 2^440328730 is an apocalyptic number.

440328730 is a deficient number, since it is larger than the sum of its proper divisors (398886350).

440328730 is a wasteful number, since it uses less digits than its factorization.

440328730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590193.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 440328730 is about 20984.0112943164. The cubic root of 440328730 is about 760.7798608429.

It can be divided in two parts, 4403 and 28730, that added together give a palindrome (33133).

The spelling of 440328730 in words is "four hundred forty million, three hundred twenty-eight thousand, seven hundred thirty".