212333424 has 80 divisors (see below), whose sum is σ = 586462464. Its totient is φ = 66035200.

The previous prime is 212333371. The next prime is 212333431. The reversal of 212333424 is 424333212.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a junction number, because it is equal to n+sod(n) for n = 212333394 and 212333403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42919 + ... + 47609.

Almost surely, 2^212333424 is an apocalyptic number.

212333424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212333424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293231232).

212333424 is an abundant number, since it is smaller than the sum of its proper divisors (374129040).

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

212333424 is a wasteful number, since it uses less digits than its factorization.

212333424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4766 (or 4760 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 212333424 is about 14571.6651073239. The cubic root of 212333424 is about 596.5856291983.

Adding to 212333424 its reverse (424333212), we get a palindrome (636666636).

The spelling of 212333424 in words is "two hundred twelve million, three hundred thirty-three thousand, four hundred twenty-four".