340440212 has 24 divisors (see below), whose sum is σ = 681623040. Its totient is φ = 145743840.

The previous prime is 340440209. The next prime is 340440229. The reversal of 340440212 is 212044043.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21614 + ... + 33882.

It is an arithmetic number, because the mean of its divisors is an integer number (28400960).

Almost surely, 2^340440212 is an apocalyptic number.

It is an amenable number.

340440212 is an abundant number, since it is smaller than the sum of its proper divisors (341182828).

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

340440212 is a wasteful number, since it uses less digits than its factorization.

340440212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13271 (or 13269 counting only the distinct ones).

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

The square root of 340440212 is about 18451.0219771155. The cubic root of 340440212 is about 698.2542977002.

Adding to 340440212 its reverse (212044043), we get a palindrome (552484255).

The spelling of 340440212 in words is "three hundred forty million, four hundred forty thousand, two hundred twelve".