20903283 has 12 divisors (see below), whose sum is σ = 30381000. Its totient is φ = 13849056.

The previous prime is 20903279. The next prime is 20903291. The reversal of 20903283 is 38230902.

It is not a de Polignac number, because 20903283 - 2² = 20903279 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20903273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5658 + ... + 8591.

It is an arithmetic number, because the mean of its divisors is an integer number (2531750).

Almost surely, 2^20903283 is an apocalyptic number.

20903283 is a deficient number, since it is larger than the sum of its proper divisors (9477717).

20903283 is a wasteful number, since it uses less digits than its factorization.

20903283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14418 (or 14415 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20903283 is about 4572.0108267588. The cubic root of 20903283 is about 275.4682183313.

The spelling of 20903283 in words is "twenty million, nine hundred three thousand, two hundred eighty-three".