214243340 has 24 divisors (see below), whose sum is σ = 453200832. Its totient is φ = 85070720.

The previous prime is 214243313. The next prime is 214243349. The reversal of 214243340 is 43342412.

It is not an unprimeable number, because it can be changed into a prime (214243349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36356 + ... + 41835.

It is an arithmetic number, because the mean of its divisors is an integer number (18883368).

Almost surely, 2^214243340 is an apocalyptic number.

214243340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214243340 is an abundant number, since it is smaller than the sum of its proper divisors (238957492).

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

214243340 is a wasteful number, since it uses less digits than its factorization.

214243340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78337 (or 78335 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 214243340 is about 14637.0536652702. The cubic root of 214243340 is about 598.3690335608.

Adding to 214243340 its reverse (43342412), we get a palindrome (257585752).

The spelling of 214243340 in words is "two hundred fourteen million, two hundred forty-three thousand, three hundred forty".