216671488 has 36 divisors (see below), whose sum is σ = 471820608. Its totient is φ = 98485760.

The previous prime is 216671447. The next prime is 216671489. The reversal of 216671488 is 884176612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216671489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35656 + ... + 41287.

It is an arithmetic number, because the mean of its divisors is an integer number (13106128).

Almost surely, 2^216671488 is an apocalyptic number.

It is an amenable number.

216671488 is an abundant number, since it is smaller than the sum of its proper divisors (255149120).

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

216671488 is an equidigital number, since it uses as much as digits as its factorization.

216671488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76970 (or 76956 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 216671488 is about 14719.7652155189. The cubic root of 216671488 is about 600.6211049740.

The spelling of 216671488 in words is "two hundred sixteen million, six hundred seventy-one thousand, four hundred eighty-eight".