20433268 has 6 divisors (see below), whose sum is σ = 35758226. Its totient is φ = 10216632.

The previous prime is 20433263. The next prime is 20433289. The reversal of 20433268 is 86233402.

It can be written as a sum of positive squares in only one way, i.e., 19873764 + 559504 = 4458^2 + 748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2554155 + ... + 2554162.

Almost surely, 2^20433268 is an apocalyptic number.

It is an amenable number.

20433268 is a deficient number, since it is larger than the sum of its proper divisors (15324958).

20433268 is a wasteful number, since it uses less digits than its factorization.

20433268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5108321 (or 5108319 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20433268 is about 4520.3172455039. The cubic root of 20433268 is about 273.3878924733.

The spelling of 20433268 in words is "twenty million, four hundred thirty-three thousand, two hundred sixty-eight".