438780 has 48 divisors (see below), whose sum is σ = 1257984. Its totient is φ = 114240.

The previous prime is 438769. The next prime is 438793. The reversal of 438780 is 87834.

438780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

438780 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 15 ways as a sum of consecutive naturals, for example, 4209 + ... + 4311.

It is an arithmetic number, because the mean of its divisors is an integer number (26208).

2⁴³⁸⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628992).

438780 is an abundant number, since it is smaller than the sum of its proper divisors (819204).

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

438780 is a wasteful number, since it uses less digits than its factorization.

438780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 438780 is about 662.4047101282. The cubic root of 438780 is about 75.9886871435.

The spelling of 438780 in words is "four hundred thirty-eight thousand, seven hundred eighty".