216429416 has 16 divisors (see below), whose sum is σ = 463777440. Its totient is φ = 92755440.

The previous prime is 216429373. The next prime is 216429443. The reversal of 216429416 is 614924612.

It is a super-2 number, since 2×216429416² = 93683384220202112, which contains 22 as substring.

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, 1932350 + ... + 1932461.

It is an arithmetic number, because the mean of its divisors is an integer number (28986090).

Almost surely, 2^216429416 is an apocalyptic number.

It is an amenable number.

216429416 is an abundant number, since it is smaller than the sum of its proper divisors (247348024).

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

216429416 is a wasteful number, since it uses less digits than its factorization.

216429416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864824 (or 3864820 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 216429416 is about 14711.5402320763. The cubic root of 216429416 is about 600.3973442119.

The spelling of 216429416 in words is "two hundred sixteen million, four hundred twenty-nine thousand, four hundred sixteen".