216429288 has 32 divisors (see below), whose sum is σ = 541598400. Its totient is φ = 72073088.

The previous prime is 216429251. The next prime is 216429289. The reversal of 216429288 is 882924612.

It is not an unprimeable number, because it can be changed into a prime (216429289) 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, 24853 + ... + 32411.

It is an arithmetic number, because the mean of its divisors is an integer number (16924950).

Almost surely, 2^216429288 is an apocalyptic number.

It is an amenable number.

216429288 is an abundant number, since it is smaller than the sum of its proper divisors (325169112).

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

216429288 is a wasteful number, since it uses less digits than its factorization.

216429288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8761 (or 8757 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 216429288 is about 14711.5358817494. The cubic root of 216429288 is about 600.3972258502.

The spelling of 216429288 in words is "two hundred sixteen million, four hundred twenty-nine thousand, two hundred eighty-eight".