20490083 has 8 divisors (see below), whose sum is σ = 22052160. Its totient is φ = 18967680.

The previous prime is 20490077. The next prime is 20490091. The reversal of 20490083 is 38009402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20490083 - 2¹⁰ = 20489059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20490023) 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 7 ways as a sum of consecutive naturals, for example, 8843 + ... + 10916.

It is an arithmetic number, because the mean of its divisors is an integer number (2756520).

Almost surely, 2^20490083 is an apocalyptic number.

20490083 is a deficient number, since it is larger than the sum of its proper divisors (1562077).

20490083 is a wasteful number, since it uses less digits than its factorization.

20490083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19837.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20490083 is about 4526.5972871463. The cubic root of 20490083 is about 273.6410443294.

Adding to 20490083 its reverse (38009402), we get a palindrome (58499485).

The spelling of 20490083 in words is "twenty million, four hundred ninety thousand, eighty-three".