214224140 has 72 divisors (see below), whose sum is σ = 514831632. Its totient is φ = 74419200.

The previous prime is 214224133. The next prime is 214224163. The reversal of 214224140 is 41422412.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73715 + ... + 76565.

Almost surely, 2^214224140 is an apocalyptic number.

214224140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214224140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257415816).

214224140 is an abundant number, since it is smaller than the sum of its proper divisors (300607492).

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

214224140 is a wasteful number, since it uses less digits than its factorization.

214224140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907 (or 2888 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 214224140 is about 14636.3977808749. The cubic root of 214224140 is about 598.3511582037.

Adding to 214224140 its reverse (41422412), we get a palindrome (255646552).

The spelling of 214224140 in words is "two hundred fourteen million, two hundred twenty-four thousand, one hundred forty".