418428 has 36 divisors (see below), whose sum is σ = 1081080. Its totient is φ = 136416.

The previous prime is 418427. The next prime is 418447. The reversal of 418428 is 824814.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 418428.

It is not an unprimeable number, because it can be changed into a prime (418423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2026 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (30030).

2⁴¹⁸⁴²⁸ 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 418428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540540).

418428 is an abundant number, since it is smaller than the sum of its proper divisors (662652).

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

418428 is a wasteful number, since it uses less digits than its factorization.

418428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 261 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 418428 is about 646.8601085242. The cubic root of 418428 is about 74.7951744625.

The spelling of 418428 in words is "four hundred eighteen thousand, four hundred twenty-eight".