20720483 has 6 divisors (see below), whose sum is σ = 24103476. Its totient is φ = 17760372.

The previous prime is 20720459. The next prime is 20720519. The reversal of 20720483 is 38402702.

It is not a de Polignac number, because 20720483 - 2¹⁰ = 20719459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20720423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211385 + ... + 211482.

It is an arithmetic number, because the mean of its divisors is an integer number (4017246).

Almost surely, 2^20720483 is an apocalyptic number.

20720483 is a deficient number, since it is larger than the sum of its proper divisors (3382993).

20720483 is an equidigital number, since it uses as much as digits as its factorization.

20720483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422881 (or 422874 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20720483 is about 4551.9757248913. The cubic root of 20720483 is about 274.6628728294.

The spelling of 20720483 in words is "twenty million, seven hundred twenty thousand, four hundred eighty-three".