216837748 has 12 divisors (see below), whose sum is σ = 380459520. Its totient is φ = 108135032.

The previous prime is 216837739. The next prime is 216837773. The reversal of 216837748 is 847738612.

It is a junction number, because it is equal to n+sod(n) for n = 216837698 and 216837707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69238 + ... + 72301.

It is an arithmetic number, because the mean of its divisors is an integer number (31704960).

Almost surely, 2^216837748 is an apocalyptic number.

It is an amenable number.

216837748 is a deficient number, since it is larger than the sum of its proper divisors (163621772).

216837748 is a wasteful number, since it uses less digits than its factorization.

216837748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141926 (or 141924 counting only the distinct ones).

The product of its digits is 451584, while the sum is 46.

The square root of 216837748 is about 14725.4116411053. The cubic root of 216837748 is about 600.7746919162.

The spelling of 216837748 in words is "two hundred sixteen million, eight hundred thirty-seven thousand, seven hundred forty-eight".