216898326 has 96 divisors (see below), whose sum is σ = 511100928. Its totient is φ = 66306240.

The previous prime is 216898307. The next prime is 216898361. The reversal of 216898326 is 623898612.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1381440 + ... + 1381596.

It is an arithmetic number, because the mean of its divisors is an integer number (5323968).

Almost surely, 2^216898326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216898326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255550464).

216898326 is an abundant number, since it is smaller than the sum of its proper divisors (294202602).

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

216898326 is a wasteful number, since it uses less digits than its factorization.

216898326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 303 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 216898326 is about 14727.4684178918. The cubic root of 216898326 is about 600.8306328844.

The spelling of 216898326 in words is "two hundred sixteen million, eight hundred ninety-eight thousand, three hundred twenty-six".