20433966 has 32 divisors (see below), whose sum is σ = 49455360. Its totient is φ = 5494656.

The previous prime is 20433943. The next prime is 20433967. The reversal of 20433966 is 66933402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13596 + ... + 15023.

It is an arithmetic number, because the mean of its divisors is an integer number (1545480).

Almost surely, 2^20433966 is an apocalyptic number.

20433966 is an abundant number, since it is smaller than the sum of its proper divisors (29021394).

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

20433966 is a wasteful number, since it uses less digits than its factorization.

20433966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28648.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 20433966 is about 4520.3944518150. The cubic root of 20433966 is about 273.3910054127.

It can be divided in two parts, 2043396 and 6, that added together give a palindrome (2043402).

The spelling of 20433966 in words is "twenty million, four hundred thirty-three thousand, nine hundred sixty-six".