216420422 has 8 divisors (see below), whose sum is σ = 324939216. Its totient is φ = 108107352.

The previous prime is 216420403. The next prime is 216420461. The reversal of 216420422 is 224024612.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48773 + ... + 53024.

It is an arithmetic number, because the mean of its divisors is an integer number (40617402).

Almost surely, 2^216420422 is an apocalyptic number.

216420422 is a deficient number, since it is larger than the sum of its proper divisors (108518794).

216420422 is a wasteful number, since it uses less digits than its factorization.

216420422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102862.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 216420422 is about 14711.2345505059. The cubic root of 216420422 is about 600.3890273380.

The spelling of 216420422 in words is "two hundred sixteen million, four hundred twenty thousand, four hundred twenty-two".