216132580 has 24 divisors (see below), whose sum is σ = 454329792. Its totient is φ = 86367072.

The previous prime is 216132571. The next prime is 216132583. The reversal of 216132580 is 85231612.

It is not an unprimeable number, because it can be changed into a prime (216132583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17649 + ... + 27271.

It is an arithmetic number, because the mean of its divisors is an integer number (18930408).

Almost surely, 2^216132580 is an apocalyptic number.

216132580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216132580 is an abundant number, since it is smaller than the sum of its proper divisors (238197212).

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

216132580 is a wasteful number, since it uses less digits than its factorization.

216132580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10755 (or 10753 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 216132580 is about 14701.4482279808. The cubic root of 216132580 is about 600.1227341514.

The spelling of 216132580 in words is "two hundred sixteen million, one hundred thirty-two thousand, five hundred eighty".