214428 has 24 divisors (see below), whose sum is σ = 508032. Its totient is φ = 70384.

The previous prime is 214399. The next prime is 214433. The reversal of 214428 is 824412.

214428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

214428 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 7 ways as a sum of consecutive naturals, for example, 1201 + ... + 1367.

It is an arithmetic number, because the mean of its divisors is an integer number (21168).

2²¹⁴⁴²⁸ is an apocalyptic number.

It is an amenable number.

214428 is an abundant number, since it is smaller than the sum of its proper divisors (293604).

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

214428 is a wasteful number, since it uses less digits than its factorization.

214428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 279 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 214428 is about 463.0637105194. The cubic root of 214428 is about 59.8540899028.

The spelling of 214428 in words is "two hundred fourteen thousand, four hundred twenty-eight".