215056378 has 16 divisors (see below), whose sum is σ = 326604096. Its totient is φ = 106194240.

The previous prime is 215056367. The next prime is 215056379. The reversal of 215056378 is 873650512.

It is not an unprimeable number, because it can be changed into a prime (215056379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87993 + ... + 90403.

It is an arithmetic number, because the mean of its divisors is an integer number (20412756).

Almost surely, 2^215056378 is an apocalyptic number.

215056378 is a deficient number, since it is larger than the sum of its proper divisors (111547718).

215056378 is a wasteful number, since it uses less digits than its factorization.

215056378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 215056378 is about 14664.8006464459. The cubic root of 215056378 is about 599.1250005060.

The spelling of 215056378 in words is "two hundred fifteen million, fifty-six thousand, three hundred seventy-eight".