438001620 has 48 divisors (see below), whose sum is σ = 1401606528. Its totient is φ = 100114560.

The previous prime is 438001609. The next prime is 438001621. The reversal of 438001620 is 26100834.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438001621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521011 + ... + 521850.

It is an arithmetic number, because the mean of its divisors is an integer number (29200136).

Almost surely, 2^438001620 is an apocalyptic number.

It is an amenable number.

438001620 is an abundant number, since it is smaller than the sum of its proper divisors (963604908).

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

438001620 is a wasteful number, since it uses less digits than its factorization.

438001620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042880 (or 1042878 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 438001620 is about 20928.4882397177. The cubic root of 438001620 is about 759.4372681077.

The spelling of 438001620 in words is "four hundred thirty-eight million, one thousand, six hundred twenty".