216436422 has 16 divisors (see below), whose sum is σ = 433017072. Its totient is φ = 72121440.

The previous prime is 216436403. The next prime is 216436427. The reversal of 216436422 is 224634612.

It is a self number, because there is not a number n which added to its sum of digits gives 216436422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216436427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31828 + ... + 38024.

It is an arithmetic number, because the mean of its divisors is an integer number (27063567).

Almost surely, 2^216436422 is an apocalyptic number.

216436422 is an abundant number, since it is smaller than the sum of its proper divisors (216580650).

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

216436422 is a wasteful number, since it uses less digits than its factorization.

216436422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12023.

The product of its digits is 13824, while the sum is 30.

The square root of 216436422 is about 14711.7783425390. The cubic root of 216436422 is about 600.4038225957.

The spelling of 216436422 in words is "two hundred sixteen million, four hundred thirty-six thousand, four hundred twenty-two".