216901802 has 8 divisors (see below), whose sum is σ = 350379876. Its totient is φ = 100108512.

The previous prime is 216901781. The next prime is 216901813. The reversal of 216901802 is 208109612.

It can be written as a sum of positive squares in 2 ways, for example, as 208773601 + 8128201 = 14449^2 + 2851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4171163 + ... + 4171214.

Almost surely, 2^216901802 is an apocalyptic number.

216901802 is a deficient number, since it is larger than the sum of its proper divisors (133478074).

216901802 is a wasteful number, since it uses less digits than its factorization.

216901802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8342392.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 216901802 is about 14727.5864281966. The cubic root of 216901802 is about 600.8338424929.

The spelling of 216901802 in words is "two hundred sixteen million, nine hundred one thousand, eight hundred two".