428380 has 12 divisors (see below), whose sum is σ = 899640. Its totient is φ = 171344.

The previous prime is 428369. The next prime is 428401. The reversal of 428380 is 83824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10690 + ... + 10729.

It is an arithmetic number, because the mean of its divisors is an integer number (74970).

2⁴²⁸³⁸⁰ is an apocalyptic number.

It is an amenable number.

428380 is an abundant number, since it is smaller than the sum of its proper divisors (471260).

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

428380 is a wasteful number, since it uses less digits than its factorization.

428380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21428 (or 21426 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 428380 is about 654.5074483915. The cubic root of 428380 is about 75.3835170015.

It can be divided in two parts, 428 and 380, that added together give a palindrome (808).

The spelling of 428380 in words is "four hundred twenty-eight thousand, three hundred eighty".