216297926 has 16 divisors (see below), whose sum is σ = 350409024. Its totient is φ = 99542784.

The previous prime is 216297889. The next prime is 216297937. The reversal of 216297926 is 629792612.

216297926 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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, 2606 + ... + 20961.

It is an arithmetic number, because the mean of its divisors is an integer number (21900564).

Almost surely, 2^216297926 is an apocalyptic number.

216297926 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

216297926 is a deficient number, since it is larger than the sum of its proper divisors (134111098).

216297926 is a wasteful number, since it uses less digits than its factorization.

216297926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23935.

The product of its digits is 163296, while the sum is 44.

The square root of 216297926 is about 14707.0706124639. The cubic root of 216297926 is about 600.2757306757.

The spelling of 216297926 in words is "two hundred sixteen million, two hundred ninety-seven thousand, nine hundred twenty-six".