212744862 has 144 divisors (see below), whose sum is σ = 548992080. Its totient is φ = 59304960.

The previous prime is 212744827. The next prime is 212744863. The reversal of 212744862 is 268447212.

212744862 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212744863) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2193198 + ... + 2193294.

It is an arithmetic number, because the mean of its divisors is an integer number (3812445).

Almost surely, 2^212744862 is an apocalyptic number.

212744862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 212744862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274496040).

212744862 is an abundant number, since it is smaller than the sum of its proper divisors (336247218).

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

212744862 is a wasteful number, since it uses less digits than its factorization.

212744862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 185 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 212744862 is about 14585.7760163798. The cubic root of 212744862 is about 596.9707147912.

The spelling of 212744862 in words is "two hundred twelve million, seven hundred forty-four thousand, eight hundred sixty-two".