20433212 has 12 divisors (see below), whose sum is σ = 35915880. Its totient is φ = 10171536.

The previous prime is 20433181. The next prime is 20433229. The reversal of 20433212 is 21233402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10238 + ... + 12069.

It is an arithmetic number, because the mean of its divisors is an integer number (2992990).

Almost surely, 2^20433212 is an apocalyptic number.

It is an amenable number.

20433212 is a deficient number, since it is larger than the sum of its proper divisors (15482668).

20433212 is a wasteful number, since it uses less digits than its factorization.

20433212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22540 (or 22538 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20433212 is about 4520.3110512442. The cubic root of 20433212 is about 273.3876427215.

Adding to 20433212 its reverse (21233402), we get a palindrome (41666614).

The spelling of 20433212 in words is "twenty million, four hundred thirty-three thousand, two hundred twelve".