212716840 has 48 divisors (see below), whose sum is σ = 556758900. Its totient is φ = 72930816.

The previous prime is 212716789. The next prime is 212716849. The reversal of 212716840 is 48617212.

212716840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 204318436 + 8398404 = 14294^2 + 2898^2 .

It is not an unprimeable number, because it can be changed into a prime (212716849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52305 + ... + 56224.

Almost surely, 2^212716840 is an apocalyptic number.

212716840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212716840 is an abundant number, since it is smaller than the sum of its proper divisors (344042060).

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

212716840 is a wasteful number, since it uses less digits than its factorization.

212716840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108554 (or 108543 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 212716840 is about 14584.8153913582. The cubic root of 212716840 is about 596.9445033507.

The spelling of 212716840 in words is "two hundred twelve million, seven hundred sixteen thousand, eight hundred forty".