20030073 has 24 divisors (see below), whose sum is σ = 31436640. Its totient is φ = 11309760.

The previous prime is 20030071. The next prime is 20030081. The reversal of 20030073 is 37003002.

It is not a de Polignac number, because 20030073 - 2¹ = 20030071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20030071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12318 + ... + 13848.

It is an arithmetic number, because the mean of its divisors is an integer number (1309860).

Almost surely, 2^20030073 is an apocalyptic number.

It is an amenable number.

20030073 is a deficient number, since it is larger than the sum of its proper divisors (11406567).

20030073 is a wasteful number, since it uses less digits than its factorization.

20030073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 15.

The square root of 20030073 is about 4475.4969556464. The cubic root of 20030073 is about 271.5777446603.

Adding to 20030073 its reverse (37003002), we get a palindrome (57033075).

The spelling of 20030073 in words is "twenty million, thirty thousand, seventy-three".