216042893 has 8 divisors (see below), whose sum is σ = 240130656. Its totient is φ = 192696400.

The previous prime is 216042881. The next prime is 216042913. The reversal of 216042893 is 398240612.

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

It is a cyclic number.

It is not a de Polignac number, because 216042893 - 2⁴ = 216042877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216042803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184703 + ... + 185868.

It is an arithmetic number, because the mean of its divisors is an integer number (30016332).

Almost surely, 2^216042893 is an apocalyptic number.

It is an amenable number.

216042893 is a deficient number, since it is larger than the sum of its proper divisors (24087763).

216042893 is a wasteful number, since it uses less digits than its factorization.

216042893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370635.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 216042893 is about 14698.3976337559. The cubic root of 216042893 is about 600.0397131121.

The spelling of 216042893 in words is "two hundred sixteen million, forty-two thousand, eight hundred ninety-three".