216266432 has 28 divisors (see below), whose sum is σ = 429737520. Its totient is φ = 107986176.

The previous prime is 216266389. The next prime is 216266441. The reversal of 216266432 is 234662612.

It is a super-2 number, since 2×216266432² = 93542339220021248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 56978 + ... + 60654.

Almost surely, 2^216266432 is an apocalyptic number.

It is an amenable number.

216266432 is a deficient number, since it is larger than the sum of its proper divisors (213471088).

216266432 is an equidigital number, since it uses as much as digits as its factorization.

216266432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4608 (or 4598 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The square root of 216266432 is about 14705.9998640011. Note that the first 3 decimals coincide. The cubic root of 216266432 is about 600.2465949340.

216266432 divided by its sum of digits (32) gives a triangular number (6758326 = T₃₆₇₆).

The spelling of 216266432 in words is "two hundred sixteen million, two hundred sixty-six thousand, four hundred thirty-two".