212789388 has 48 divisors (see below), whose sum is σ = 573834240. Its totient is φ = 60111744.

The previous prime is 212789383. The next prime is 212789393. The reversal of 212789388 is 883987212.

212789388 is digitally balanced in base 2, 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 (212789383) and next prime (212789393).

It is not an unprimeable number, because it can be changed into a prime (212789383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6756 + ... + 21707.

It is an arithmetic number, because the mean of its divisors is an integer number (11954880).

Almost surely, 2^212789388 is an apocalyptic number.

212789388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

212789388 is an abundant number, since it is smaller than the sum of its proper divisors (361044852).

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

212789388 is a wasteful number, since it uses less digits than its factorization.

212789388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28566 (or 28564 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 212789388 is about 14587.3022865779. The cubic root of 212789388 is about 597.0123591402.

The spelling of 212789388 in words is "two hundred twelve million, seven hundred eighty-nine thousand, three hundred eighty-eight".