216732532 has 48 divisors (see below), whose sum is σ = 407077888. Its totient is φ = 100776960.

The previous prime is 216732499. The next prime is 216732539. The reversal of 216732532 is 235237612.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 216732494 and 216732503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216732539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444793 + ... + 445279.

Almost surely, 2^216732532 is an apocalyptic number.

It is an amenable number.

216732532 is a deficient number, since it is larger than the sum of its proper divisors (190345356).

216732532 is a wasteful number, since it uses less digits than its factorization.

216732532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 654 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 216732532 is about 14721.8386080000. The cubic root of 216732532 is about 600.6775050606.

The spelling of 216732532 in words is "two hundred sixteen million, seven hundred thirty-two thousand, five hundred thirty-two".