438481620 has 96 divisors (see below), whose sum is σ = 1435996800. Its totient is φ = 110771712.

The previous prime is 438481619. The next prime is 438481661. The reversal of 438481620 is 26184834.

It is a super-2 number, since 2×438481620² = 384532262155648800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 31 ways as a sum of consecutive naturals, for example, 11109 + ... + 31628.

It is an arithmetic number, because the mean of its divisors is an integer number (14958300).

Almost surely, 2^438481620 is an apocalyptic number.

It is an amenable number.

438481620 is an abundant number, since it is smaller than the sum of its proper divisors (997515180).

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

438481620 is a wasteful number, since it uses less digits than its factorization.

438481620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42774 (or 42766 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 438481620 is about 20939.9527220097. The cubic root of 438481620 is about 759.7145858100.

It can be divided in two parts, 4384816 and 20, that added together give a square (4384836 = 2094²).

The spelling of 438481620 in words is "four hundred thirty-eight million, four hundred eighty-one thousand, six hundred twenty".