214340140 has 72 divisors (see below), whose sum is σ = 543043872. Its totient is φ = 69603840.

The previous prime is 214340129. The next prime is 214340141. The reversal of 214340140 is 41043412.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (214340141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48420 + ... + 52660.

It is an arithmetic number, because the mean of its divisors is an integer number (7542276).

Almost surely, 2^214340140 is an apocalyptic number.

214340140 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 214340140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271521936).

214340140 is an abundant number, since it is smaller than the sum of its proper divisors (328703732).

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

214340140 is a wasteful number, since it uses less digits than its factorization.

214340140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295 (or 4274 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 214340140 is about 14640.3599682521. The cubic root of 214340140 is about 598.4591388917.

Adding to 214340140 its reverse (41043412), we get a palindrome (255383552).

The spelling of 214340140 in words is "two hundred fourteen million, three hundred forty thousand, one hundred forty".