213784912 has 20 divisors (see below), whose sum is σ = 451863936. Its totient is φ = 97174880.

The previous prime is 213784871. The next prime is 213784933. The reversal of 213784912 is 219487312.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 607168 + ... + 607519.

Almost surely, 2^213784912 is an apocalyptic number.

213784912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213784912 is an abundant number, since it is smaller than the sum of its proper divisors (238079024).

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

213784912 is a wasteful number, since it uses less digits than its factorization.

213784912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214706 (or 1214700 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 213784912 is about 14621.3854336721. The cubic root of 213784912 is about 597.9419413215.

The spelling of 213784912 in words is "two hundred thirteen million, seven hundred eighty-four thousand, nine hundred twelve".