216443452 has 12 divisors (see below), whose sum is σ = 382316760. Its totient is φ = 107210096.

The previous prime is 216443449. The next prime is 216443471. The reversal of 216443452 is 254344612.

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, 252427 + ... + 253282.

It is an arithmetic number, because the mean of its divisors is an integer number (31859730).

Almost surely, 2^216443452 is an apocalyptic number.

It is an amenable number.

216443452 is a deficient number, since it is larger than the sum of its proper divisors (165873308).

216443452 is a wasteful number, since it uses less digits than its factorization.

216443452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505820 (or 505818 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

The square root of 216443452 is about 14712.0172648077. The cubic root of 216443452 is about 600.4103230314.

The spelling of 216443452 in words is "two hundred sixteen million, four hundred forty-three thousand, four hundred fifty-two".