216869242 has 8 divisors (see below), whose sum is σ = 335797632. Its totient is φ = 104936700.

The previous prime is 216869239. The next prime is 216869243. The reversal of 216869242 is 242968612.

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

It is a junction number, because it is equal to n+sod(n) for n = 216869195 and 216869204.

It is not an unprimeable number, because it can be changed into a prime (216869243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1748884 + ... + 1749007.

It is an arithmetic number, because the mean of its divisors is an integer number (41974704).

Almost surely, 2^216869242 is an apocalyptic number.

216869242 is a deficient number, since it is larger than the sum of its proper divisors (118928390).

216869242 is a wasteful number, since it uses less digits than its factorization.

216869242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3497924.

The product of its digits is 82944, while the sum is 40.

The square root of 216869242 is about 14726.4809781563. The cubic root of 216869242 is about 600.8037764619.

The spelling of 216869242 in words is "two hundred sixteen million, eight hundred sixty-nine thousand, two hundred forty-two".