216132587 has 16 divisors (see below), whose sum is σ = 248596992. Its totient is φ = 185982720.

The previous prime is 216132583. The next prime is 216132593. The reversal of 216132587 is 785231612.

It is a happy number.

It is not a de Polignac number, because 216132587 - 2² = 216132583 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 20138 + ... + 28944.

It is an arithmetic number, because the mean of its divisors is an integer number (15537312).

Almost surely, 2^216132587 is an apocalyptic number.

216132587 is a deficient number, since it is larger than the sum of its proper divisors (32464405).

216132587 is a wasteful number, since it uses less digits than its factorization.

216132587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8938.

The product of its digits is 20160, while the sum is 35.

The square root of 216132587 is about 14701.4484660526. The cubic root of 216132587 is about 600.1227406303.

The spelling of 216132587 in words is "two hundred sixteen million, one hundred thirty-two thousand, five hundred eighty-seven".