20433656 has 16 divisors (see below), whose sum is σ = 38410440. Its totient is φ = 10190880.

The previous prime is 20433653. The next prime is 20433689. The reversal of 20433656 is 65633402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433653) 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, 335 + ... + 6401.

Almost surely, 2^20433656 is an apocalyptic number.

It is an amenable number.

20433656 is a deficient number, since it is larger than the sum of its proper divisors (17976784).

20433656 is a wasteful number, since it uses less digits than its factorization.

20433656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6494 (or 6490 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 20433656 is about 4520.3601626419. The cubic root of 20433656 is about 273.3896228839.

The spelling of 20433656 in words is "twenty million, four hundred thirty-three thousand, six hundred fifty-six".