216569076 has 12 divisors (see below), whose sum is σ = 505327872. Its totient is φ = 72189688.

The previous prime is 216569053. The next prime is 216569141. The reversal of 216569076 is 670965612.

216569076 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between even and odd.

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, 9023700 + ... + 9023723.

It is an arithmetic number, because the mean of its divisors is an integer number (42110656).

Almost surely, 2^216569076 is an apocalyptic number.

It is an amenable number.

216569076 is an abundant number, since it is smaller than the sum of its proper divisors (288758796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216569076 is a wasteful number, since it uses less digits than its factorization.

216569076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18047430 (or 18047428 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 216569076 is about 14716.2860803941. The cubic root of 216569076 is about 600.5264601533.

The spelling of 216569076 in words is "two hundred sixteen million, five hundred sixty-nine thousand, seventy-six".