215066442 has 8 divisors (see below), whose sum is σ = 430132896. Its totient is φ = 71688812.

The previous prime is 215066381. The next prime is 215066447. The reversal of 215066442 is 244660512.

215066442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

215066442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (215066447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17922198 + ... + 17922209.

It is an arithmetic number, because the mean of its divisors is an integer number (53766612).

Almost surely, 2^215066442 is an apocalyptic number.

215066442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

215066442 is a wasteful number, since it uses less digits than its factorization.

215066442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35844412.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 215066442 is about 14665.1437769972. The cubic root of 215066442 is about 599.1343461173.

The spelling of 215066442 in words is "two hundred fifteen million, sixty-six thousand, four hundred forty-two".