212326040 has 32 divisors (see below), whose sum is σ = 479483280. Its totient is φ = 84619392.

The previous prime is 212326031. The next prime is 212326057. The reversal of 212326040 is 40623212.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499 + ... + 20661.

Almost surely, 2^212326040 is an apocalyptic number.

212326040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212326040 is an abundant number, since it is smaller than the sum of its proper divisors (267157240).

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

212326040 is a wasteful number, since it uses less digits than its factorization.

212326040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19451 (or 19447 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 212326040 is about 14571.4117366850. The cubic root of 212326040 is about 596.5787135979.

Adding to 212326040 its reverse (40623212), we get a palindrome (252949252).

It can be divided in two parts, 21232 and 6040, that added together give a palindrome (27272).

The spelling of 212326040 in words is "two hundred twelve million, three hundred twenty-six thousand, forty".