20073029 has 4 divisors (see below), whose sum is σ = 20348076. Its totient is φ = 19797984.

The previous prime is 20073023. The next prime is 20073041. The reversal of 20073029 is 92037002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16564900 + 3508129 = 4070^2 + 1873^2 .

It is a cyclic number.

It is not a de Polignac number, because 20073029 - 2¹² = 20068933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20072995 and 20073013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20073023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137414 + ... + 137559.

It is an arithmetic number, because the mean of its divisors is an integer number (5087019).

Almost surely, 2^20073029 is an apocalyptic number.

It is an amenable number.

20073029 is a deficient number, since it is larger than the sum of its proper divisors (275047).

20073029 is an equidigital number, since it uses as much as digits as its factorization.

20073029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275046.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 20073029 is about 4480.2934055707. The cubic root of 20073029 is about 271.7717456849.

The spelling of 20073029 in words is "twenty million, seventy-three thousand, twenty-nine".