215376830 has 32 divisors (see below), whose sum is σ = 405969408. Its totient is φ = 82112800.

The previous prime is 215376829. The next prime is 215376851. The reversal of 215376830 is 38673512.

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 15 ways as a sum of consecutive naturals, for example, 70025 + ... + 73035.

It is an arithmetic number, because the mean of its divisors is an integer number (12686544).

Almost surely, 2^215376830 is an apocalyptic number.

215376830 is a deficient number, since it is larger than the sum of its proper divisors (190592578).

215376830 is a wasteful number, since it uses less digits than its factorization.

215376830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 215376830 is about 14675.7224694391. The cubic root of 215376830 is about 599.4224349502.

The spelling of 215376830 in words is "two hundred fifteen million, three hundred seventy-six thousand, eight hundred thirty".