216669342 has 32 divisors (see below), whose sum is σ = 447939072. Its totient is φ = 69827264.

The previous prime is 216669317. The next prime is 216669371. The reversal of 216669342 is 243966612.

It is a self number, because there is not a number n which added to its sum of digits gives 216669342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18778 + ... + 28034.

It is an arithmetic number, because the mean of its divisors is an integer number (13998096).

Almost surely, 2^216669342 is an apocalyptic number.

216669342 is an abundant number, since it is smaller than the sum of its proper divisors (231269730).

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

216669342 is a wasteful number, since it uses less digits than its factorization.

216669342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9392.

The product of its digits is 93312, while the sum is 39.

The square root of 216669342 is about 14719.6923201540. The cubic root of 216669342 is about 600.6191220379.

The spelling of 216669342 in words is "two hundred sixteen million, six hundred sixty-nine thousand, three hundred forty-two".