20268338 has 4 divisors (see below), whose sum is σ = 30402510. Its totient is φ = 10134168.

The previous prime is 20268331. The next prime is 20268373. The reversal of 20268338 is 83386202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12411529 + 7856809 = 3523^2 + 2803^2 .

It is not an unprimeable number, because it can be changed into a prime (20268331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067083 + ... + 5067086.

Almost surely, 2^20268338 is an apocalyptic number.

20268338 is a deficient number, since it is larger than the sum of its proper divisors (10134172).

20268338 is a wasteful number, since it uses less digits than its factorization.

20268338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10134171.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 20268338 is about 4502.0370944718. The cubic root of 20268338 is about 272.6503415268.

The spelling of 20268338 in words is "twenty million, two hundred sixty-eight thousand, three hundred thirty-eight".