215340956 has 12 divisors (see below), whose sum is σ = 378249480. Its totient is φ = 107269680.

The previous prime is 215340901. The next prime is 215340991. The reversal of 215340956 is 659043512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98990 + ... + 101141.

It is an arithmetic number, because the mean of its divisors is an integer number (31520790).

Almost surely, 2^215340956 is an apocalyptic number.

It is an amenable number.

215340956 is a deficient number, since it is larger than the sum of its proper divisors (162908524).

215340956 is a wasteful number, since it uses less digits than its factorization.

215340956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200404 (or 200402 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 215340956 is about 14674.5001959181. The cubic root of 215340956 is about 599.3891523938.

The spelling of 215340956 in words is "two hundred fifteen million, three hundred forty thousand, nine hundred fifty-six".