216969892 has 24 divisors (see below), whose sum is σ = 403431840. Its totient is φ = 101810880.

The previous prime is 216969871. The next prime is 216969913. The reversal of 216969892 is 298969612.

216969892 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216969871) and next prime (216969913).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5209 + ... + 21472.

It is an arithmetic number, because the mean of its divisors is an integer number (16809660).

Almost surely, 2^216969892 is an apocalyptic number.

It is an amenable number.

216969892 is a deficient number, since it is larger than the sum of its proper divisors (186461948).

216969892 is a wasteful number, since it uses less digits than its factorization.

216969892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26811 (or 26809 counting only the distinct ones).

The product of its digits is 839808, while the sum is 52.

The square root of 216969892 is about 14729.8978950976. The cubic root of 216969892 is about 600.8967073404.

The spelling of 216969892 in words is "two hundred sixteen million, nine hundred sixty-nine thousand, eight hundred ninety-two".