438771020 has 24 divisors (see below), whose sum is σ = 975621024. Its totient is φ = 165184256.

The previous prime is 438771013. The next prime is 438771029. The reversal of 438771020 is 20177834.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (438771029) 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, 644912 + ... + 645591.

It is an arithmetic number, because the mean of its divisors is an integer number (40650876).

Almost surely, 2^438771020 is an apocalyptic number.

It is an amenable number.

438771020 is an abundant number, since it is smaller than the sum of its proper divisors (536850004).

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

438771020 is a wasteful number, since it uses less digits than its factorization.

438771020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290529 (or 1290527 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 438771020 is about 20946.8618174656. The cubic root of 438771020 is about 759.8816874922.

The spelling of 438771020 in words is "four hundred thirty-eight million, seven hundred seventy-one thousand, twenty".