212464434 has 96 divisors (see below), whose sum is σ = 540743040. Its totient is φ = 54452736.

The previous prime is 212464433. The next prime is 212464451. The reversal of 212464434 is 434464212.

212464434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212464434² = 90282271429880712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212464433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 262222 + ... + 263030.

It is an arithmetic number, because the mean of its divisors is an integer number (5632740).

Almost surely, 2^212464434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212464434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270371520).

212464434 is an abundant number, since it is smaller than the sum of its proper divisors (328278606).

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

212464434 is a wasteful number, since it uses less digits than its factorization.

212464434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 871 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 212464434 is about 14576.1597823295. The cubic root of 212464434 is about 596.7083020095.

The spelling of 212464434 in words is "two hundred twelve million, four hundred sixty-four thousand, four hundred thirty-four".