340212656 has 20 divisors (see below), whose sum is σ = 753328272. Its totient is φ = 145805376.

The previous prime is 340212641. The next prime is 340212661. The reversal of 340212656 is 656212043.

340212656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×340212656³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1518695 + ... + 1518918.

Almost surely, 2^340212656 is an apocalyptic number.

It is an amenable number.

340212656 is an abundant number, since it is smaller than the sum of its proper divisors (413115616).

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

340212656 is a wasteful number, since it uses less digits than its factorization.

340212656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037628 (or 3037622 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 340212656 is about 18444.8544586288. The cubic root of 340212656 is about 698.0986880273.

Adding to 340212656 its reverse (656212043), we get a palindrome (996424699).

The spelling of 340212656 in words is "three hundred forty million, two hundred twelve thousand, six hundred fifty-six".