214728 has 32 divisors (see below), whose sum is σ = 561600. Its totient is φ = 68288.

The previous prime is 214723. The next prime is 214729. The reversal of 214728 is 827412.

It is a super-2 number, since 2×214728² = 92216227968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 8 and base 12.

It is a junction number, because it is equal to n+sod(n) for n = 214698 and 214707.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 214728.

It is not an unprimeable number, because it can be changed into a prime (214723) by changing a digit.

214728 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, 358 + ... + 746.

It is an arithmetic number, because the mean of its divisors is an integer number (17550).

2²¹⁴⁷²⁸ 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 214728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280800).

214728 is an abundant number, since it is smaller than the sum of its proper divisors (346872).

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

214728 is a wasteful number, since it uses less digits than its factorization.

214728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 417 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 214728 is about 463.3875268067. The cubic root of 214728 is about 59.8819902695.

The spelling of 214728 in words is "two hundred fourteen thousand, seven hundred twenty-eight".