216980532 has 144 divisors (see below), whose sum is σ = 619673600. Its totient is φ = 66134880.

The previous prime is 216980497. The next prime is 216980567. The reversal of 216980532 is 235089612.

It is an interprime number because it is at equal distance from previous prime (216980497) and next prime (216980567).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 572319 + ... + 572697.

Almost surely, 2^216980532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216980532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309836800).

216980532 is an abundant number, since it is smaller than the sum of its proper divisors (402693068).

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

216980532 is a wasteful number, since it uses less digits than its factorization.

216980532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 216980532 is about 14730.2590608584. The cubic root of 216980532 is about 600.9065296502.

The spelling of 216980532 in words is "two hundred sixteen million, nine hundred eighty thousand, five hundred thirty-two".