20603073 has 8 divisors (see below), whose sum is σ = 27496000. Its totient is φ = 13722768.

The previous prime is 20603059. The next prime is 20603111. The reversal of 20603073 is 37030602.

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

It is not a de Polignac number, because 20603073 - 2⁴ = 20603057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20603053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1743 + ... + 6651.

It is an arithmetic number, because the mean of its divisors is an integer number (3437000).

Almost surely, 2^20603073 is an apocalyptic number.

It is an amenable number.

20603073 is a deficient number, since it is larger than the sum of its proper divisors (6892927).

20603073 is a wasteful number, since it uses less digits than its factorization.

20603073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6311.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 20603073 is about 4539.0608059377. The cubic root of 20603073 is about 274.1431090377.

Adding to 20603073 its reverse (37030602), we get a palindrome (57633675).

The spelling of 20603073 in words is "twenty million, six hundred three thousand, seventy-three".