216974794 has 8 divisors (see below), whose sum is σ = 342591840. Its totient is φ = 102777516.

The previous prime is 216974789. The next prime is 216974809. The reversal of 216974794 is 497479612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×216974794² = 94156122462684872, which contains 22 as substring.

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, 2854894 + ... + 2854969.

It is an arithmetic number, because the mean of its divisors is an integer number (42823980).

Almost surely, 2^216974794 is an apocalyptic number.

216974794 is a deficient number, since it is larger than the sum of its proper divisors (125617046).

216974794 is a wasteful number, since it uses less digits than its factorization.

216974794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5709884.

The product of its digits is 762048, while the sum is 49.

The square root of 216974794 is about 14730.0642904232. The cubic root of 216974794 is about 600.9012326588.

The spelling of 216974794 in words is "two hundred sixteen million, nine hundred seventy-four thousand, seven hundred ninety-four".