438546 has 8 divisors (see below), whose sum is σ = 877104. Its totient is φ = 146180.

The previous prime is 438533. The next prime is 438551. The reversal of 438546 is 645834.

It is a sphenic number, since it is the product of 3 distinct primes.

438546 is an admirable number.

It is an unprimeable number.

438546 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36540 + ... + 36551.

It is an arithmetic number, because the mean of its divisors is an integer number (109638).

2⁴³⁸⁵⁴⁶ is an apocalyptic number.

438546 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

438546 is a wasteful number, since it uses less digits than its factorization.

438546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73096.

The product of its digits is 11520, while the sum is 30.

The square root of 438546 is about 662.2280573941. The cubic root of 438546 is about 75.9751765652.

Subtracting from 438546 its sum of digits (30), we obtain a triangular number (438516 = T₉₃₆).

The spelling of 438546 in words is "four hundred thirty-eight thousand, five hundred forty-six".