212822688 has 96 divisors (see below), whose sum is σ = 621153792. Its totient is φ = 63360000.

The previous prime is 212822683. The next prime is 212822689. The reversal of 212822688 is 886228212.

212822688 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 (96).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (212822681) 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, 35938 + ... + 41438.

It is an arithmetic number, because the mean of its divisors is an integer number (6470352).

Almost surely, 2^212822688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212822688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310576896).

212822688 is an abundant number, since it is smaller than the sum of its proper divisors (408331104).

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

212822688 is a wasteful number, since it uses less digits than its factorization.

212822688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558 (or 5550 counting only the distinct ones).

The product of its digits is 49152, while the sum is 39.

The square root of 212822688 is about 14588.4436455710. The cubic root of 212822688 is about 597.0435002211.

The spelling of 212822688 in words is "two hundred twelve million, eight hundred twenty-two thousand, six hundred eighty-eight".