438730 has 16 divisors (see below), whose sum is σ = 801864. Its totient is φ = 172800.

The previous prime is 438721. The next prime is 438733. The reversal of 438730 is 37834.

438730 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 4 ways, for example, as 413449 + 25281 = 643^2 + 159^2 .

It is a junction number, because it is equal to n+sod(n) for n = 438695 and 438704.

It is not an unprimeable number, because it can be changed into a prime (438733) 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, 430 + ... + 1030.

2⁴³⁸⁷³⁰ is an apocalyptic number.

438730 is a deficient number, since it is larger than the sum of its proper divisors (363134).

438730 is a wasteful number, since it uses less digits than its factorization.

438730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 438730 is about 662.3669677754. The cubic root of 438730 is about 75.9858006714.

The spelling of 438730 in words is "four hundred thirty-eight thousand, seven hundred thirty".