20000073 has 8 divisors (see below), whose sum is σ = 26837248. Its totient is φ = 13248144.

The previous prime is 20000069. The next prime is 20000077. The reversal of 20000073 is 37000002.

It is an interprime number because it is at equal distance from previous prime (20000069) and next prime (20000077).

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

It is not a de Polignac number, because 20000073 - 2² = 20000069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20761 + ... + 21702.

It is an arithmetic number, because the mean of its divisors is an integer number (3354656).

Almost surely, 2^20000073 is an apocalyptic number.

It is an amenable number.

20000073 is a deficient number, since it is larger than the sum of its proper divisors (6837175).

20000073 is a wasteful number, since it uses less digits than its factorization.

20000073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42623.

The product of its (nonzero) digits is 42, while the sum is 12.

The square root of 20000073 is about 4472.1441166402. The cubic root of 20000073 is about 271.4420919132.

Adding to 20000073 its reverse (37000002), we get a palindrome (57000075).

The spelling of 20000073 in words is "twenty million, seventy-three", and thus it is an aban number and an uban number.