216301506 has 32 divisors (see below), whose sum is σ = 463216320. Its totient is φ = 67094016.

The previous prime is 216301487. The next prime is 216301511. The reversal of 216301506 is 605103612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2836 + ... + 20991.

It is an arithmetic number, because the mean of its divisors is an integer number (14475510).

Almost surely, 2^216301506 is an apocalyptic number.

216301506 is an abundant number, since it is smaller than the sum of its proper divisors (246914814).

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

216301506 is a wasteful number, since it uses less digits than its factorization.

216301506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23938.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 216301506 is about 14707.1923221259. The cubic root of 216301506 is about 600.2790424276.

The spelling of 216301506 in words is "two hundred sixteen million, three hundred one thousand, five hundred six".