216992346 has 32 divisors (see below), whose sum is σ = 447211968. Its totient is φ = 70139520.

The previous prime is 216992341. The next prime is 216992351. The reversal of 216992346 is 643299612.

It is an interprime number because it is at equal distance from previous prime (216992341) and next prime (216992351).

It is a junction number, because it is equal to n+sod(n) for n = 216992298 and 216992307.

It is not an unprimeable number, because it can be changed into a prime (216992341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72006 + ... + 74958.

It is an arithmetic number, because the mean of its divisors is an integer number (13975374).

Almost surely, 2^216992346 is an apocalyptic number.

216992346 is an abundant number, since it is smaller than the sum of its proper divisors (230219622).

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

216992346 is a wasteful number, since it uses less digits than its factorization.

216992346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326.

The product of its digits is 139968, while the sum is 42.

The square root of 216992346 is about 14730.6600666773. The cubic root of 216992346 is about 600.9174353612.

The spelling of 216992346 in words is "two hundred sixteen million, nine hundred ninety-two thousand, three hundred forty-six".