216304626 has 16 divisors (see below), whose sum is σ = 455378400. Its totient is φ = 68306688.

The previous prime is 216304603. The next prime is 216304637. The reversal of 216304626 is 626403612.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216304593 and 216304602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948591 + ... + 948818.

It is an arithmetic number, because the mean of its divisors is an integer number (28461150).

Almost surely, 2^216304626 is an apocalyptic number.

216304626 is an abundant number, since it is smaller than the sum of its proper divisors (239073774).

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

216304626 is a wasteful number, since it uses less digits than its factorization.

216304626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897433.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 216304626 is about 14707.2983922949. The cubic root of 216304626 is about 600.2819286175.

The spelling of 216304626 in words is "two hundred sixteen million, three hundred four thousand, six hundred twenty-six".