218296442 has 32 divisors (see below), whose sum is σ = 405955200. Its totient is φ = 85727808.

The previous prime is 218296409. The next prime is 218296469. The reversal of 218296442 is 244692812.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 218296396 and 218296405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20984 + ... + 29612.

It is an arithmetic number, because the mean of its divisors is an integer number (12686100).

Almost surely, 2^218296442 is an apocalyptic number.

218296442 is a deficient number, since it is larger than the sum of its proper divisors (187658758).

218296442 is a wasteful number, since it uses less digits than its factorization.

218296442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8790.

The product of its digits is 55296, while the sum is 38.

The square root of 218296442 is about 14774.8584426383. The cubic root of 218296442 is about 602.1188438783.

The spelling of 218296442 in words is "two hundred eighteen million, two hundred ninety-six thousand, four hundred forty-two".