438420 has 24 divisors (see below), whose sum is σ = 1227744. Its totient is φ = 116896.

The previous prime is 438419. The next prime is 438439. The reversal of 438420 is 24834.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3594 + ... + 3713.

It is an arithmetic number, because the mean of its divisors is an integer number (51156).

2⁴³⁸⁴²⁰ is an apocalyptic number.

It is an amenable number.

438420 is an abundant number, since it is smaller than the sum of its proper divisors (789324).

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

438420 is a wasteful number, since it uses less digits than its factorization.

438420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7319 (or 7317 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 438420 is about 662.1329171700. The cubic root of 438420 is about 75.9678996476.

It can be divided in two parts, 438 and 420, that added together give a palindrome (858).

The spelling of 438420 in words is "four hundred thirty-eight thousand, four hundred twenty".