215340056 has 16 divisors (see below), whose sum is σ = 403985400. Its totient is φ = 107610624.

The previous prime is 215340031. The next prime is 215340067. The reversal of 215340056 is 650043512.

It is a congruent number.

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, 10535 + ... + 23273.

Almost surely, 2^215340056 is an apocalyptic number.

It is an amenable number.

215340056 is a deficient number, since it is larger than the sum of its proper divisors (188645344).

215340056 is a wasteful number, since it uses less digits than its factorization.

215340056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14858 (or 14854 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 215340056 is about 14674.4695304464. The cubic root of 215340056 is about 599.3883173599.

Adding to 215340056 its reverse (650043512), we get a palindrome (865383568).

The spelling of 215340056 in words is "two hundred fifteen million, three hundred forty thousand, fifty-six".