212332340 has 24 divisors (see below), whose sum is σ = 486434592. Its totient is φ = 77211680.

The previous prime is 212332339. The next prime is 212332357. The reversal of 212332340 is 43233212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482354 + ... + 482793.

It is an arithmetic number, because the mean of its divisors is an integer number (20268108).

Almost surely, 2^212332340 is an apocalyptic number.

212332340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212332340 is an abundant number, since it is smaller than the sum of its proper divisors (274102252).

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

212332340 is a wasteful number, since it uses less digits than its factorization.

212332340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965167 (or 965165 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 212332340 is about 14571.6279118018. The cubic root of 212332340 is about 596.5846139712.

Adding to 212332340 its reverse (43233212), we get a palindrome (255565552).

The spelling of 212332340 in words is "two hundred twelve million, three hundred thirty-two thousand, three hundred forty".