340140252 has 12 divisors (see below), whose sum is σ = 793660616. Its totient is φ = 113380080.

The previous prime is 340140187. The next prime is 340140287. The reversal of 340140252 is 252041043.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14172499 + ... + 14172522.

Almost surely, 2^340140252 is an apocalyptic number.

It is an amenable number.

340140252 is an abundant number, since it is smaller than the sum of its proper divisors (453520364).

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

340140252 is a wasteful number, since it uses less digits than its factorization.

340140252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28345028 (or 28345026 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 340140252 is about 18442.8916387859. The cubic root of 340140252 is about 698.0491614320.

Adding to 340140252 its reverse (252041043), we get a palindrome (592181295).

The spelling of 340140252 in words is "three hundred forty million, one hundred forty thousand, two hundred fifty-two".