216306974 has 8 divisors (see below), whose sum is σ = 349419000. Its totient is φ = 99833976.

The previous prime is 216306949. The next prime is 216306983. The reversal of 216306974 is 479603612.

216306974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 4159724 + ... + 4159775.

It is an arithmetic number, because the mean of its divisors is an integer number (43677375).

Almost surely, 2^216306974 is an apocalyptic number.

216306974 is a deficient number, since it is larger than the sum of its proper divisors (133112026).

216306974 is a wasteful number, since it uses less digits than its factorization.

216306974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8319514.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 216306974 is about 14707.3782163919. The cubic root of 216306974 is about 600.2841006420.

The spelling of 216306974 in words is "two hundred sixteen million, three hundred six thousand, nine hundred seventy-four".