340212520 has 16 divisors (see below), whose sum is σ = 765478260. Its totient is φ = 136084992.

The previous prime is 340212503. The next prime is 340212539. The reversal of 340212520 is 25212043.

It can be written as a sum of positive squares in 2 ways, for example, as 315630756 + 24581764 = 17766^2 + 4958^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4252617 + ... + 4252696.

Almost surely, 2^340212520 is an apocalyptic number.

It is an amenable number.

340212520 is an abundant number, since it is smaller than the sum of its proper divisors (425265740).

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

340212520 is a wasteful number, since it uses less digits than its factorization.

340212520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8505324 (or 8505320 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 340212520 is about 18444.8507719634. The cubic root of 340212520 is about 698.0985950056.

Adding to 340212520 its reverse (25212043), we get a palindrome (365424563).

The spelling of 340212520 in words is "three hundred forty million, two hundred twelve thousand, five hundred twenty".