216465532 has 6 divisors (see below), whose sum is σ = 378814688. Its totient is φ = 108232764.

The previous prime is 216465517. The next prime is 216465553. The reversal of 216465532 is 235564612.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27058188 + ... + 27058195.

Almost surely, 2^216465532 is an apocalyptic number.

It is an amenable number.

216465532 is a deficient number, since it is larger than the sum of its proper divisors (162349156).

216465532 is a wasteful number, since it uses less digits than its factorization.

216465532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54116387 (or 54116385 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 216465532 is about 14712.7676526206. The cubic root of 216465532 is about 600.4307388476.

The spelling of 216465532 in words is "two hundred sixteen million, four hundred sixty-five thousand, five hundred thirty-two".