20924903 has 2 divisors, whose sum is σ = 20924904. Its totient is φ = 20924902.

The previous prime is 20924899. The next prime is 20924941. The reversal of 20924903 is 30942902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20924903 - 2² = 20924899 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20924003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10462451 + 10462452.

It is an arithmetic number, because the mean of its divisors is an integer number (10462452).

Almost surely, 2^20924903 is an apocalyptic number.

20924903 is a deficient number, since it is larger than the sum of its proper divisors (1).

20924903 is an equidigital number, since it uses as much as digits as its factorization.

20924903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20924903 is about 4574.3746020631. The cubic root of 20924903 is about 275.5631567003.

The spelling of 20924903 in words is "twenty million, nine hundred twenty-four thousand, nine hundred three".