214243220 has 48 divisors (see below), whose sum is σ = 461438208. Its totient is φ = 83529600.

The previous prime is 214243199. The next prime is 214243241. The reversal of 214243220 is 22342412.

It is an interprime number because it is at equal distance from previous prime (214243199) and next prime (214243241).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 214243192 and 214243201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134549 + ... + 136131.

It is an arithmetic number, because the mean of its divisors is an integer number (9613296).

Almost surely, 2^214243220 is an apocalyptic number.

214243220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214243220 is an abundant number, since it is smaller than the sum of its proper divisors (247194988).

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

214243220 is a wasteful number, since it uses less digits than its factorization.

214243220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760 (or 1758 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 214243220 is about 14637.0495660840. The cubic root of 214243220 is about 598.3689218432.

Adding to 214243220 its reverse (22342412), we get a palindrome (236585632).

The spelling of 214243220 in words is "two hundred fourteen million, two hundred forty-three thousand, two hundred twenty".