40033212 has 12 divisors (see below), whose sum is σ = 93410856. Its totient is φ = 13344400.

The previous prime is 40033187. The next prime is 40033219. The reversal of 40033212 is 21233004.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 40033191 and 40033200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40033219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668039 + ... + 1668062.

It is an arithmetic number, because the mean of its divisors is an integer number (7784238).

Almost surely, 2^40033212 is an apocalyptic number.

It is an amenable number.

40033212 is an abundant number, since it is smaller than the sum of its proper divisors (53377644).

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

40033212 is a wasteful number, since it uses less digits than its factorization.

40033212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336108 (or 3336106 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40033212 is about 6327.1804146871. The cubic root of 40033212 is about 342.0898160192.

Adding to 40033212 its reverse (21233004), we get a palindrome (61266216).

The spelling of 40033212 in words is "forty million, thirty-three thousand, two hundred twelve".