215416442 has 16 divisors (see below), whose sum is σ = 332259840. Its totient is φ = 104670288.

The previous prime is 215416423. The next prime is 215416447. The reversal of 215416442 is 244614512.

It is not an unprimeable number, because it can be changed into a prime (215416447) 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, 96503 + ... + 98709.

It is an arithmetic number, because the mean of its divisors is an integer number (20766240).

Almost surely, 2^215416442 is an apocalyptic number.

215416442 is a deficient number, since it is larger than the sum of its proper divisors (116843398).

215416442 is a wasteful number, since it uses less digits than its factorization.

215416442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565.

The product of its digits is 7680, while the sum is 29.

The square root of 215416442 is about 14677.0719831988. The cubic root of 215416442 is about 599.4591811900.

The spelling of 215416442 in words is "two hundred fifteen million, four hundred sixteen thousand, four hundred forty-two".