20030029 has 4 divisors (see below), whose sum is σ = 21208284. Its totient is φ = 18851776.

The previous prime is 20030027. The next prime is 20030053. The reversal of 20030029 is 92003002.

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 13704804 + 6325225 = 3702^2 + 2515^2 .

It is not a de Polignac number, because 20030029 - 2¹ = 20030027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20029994 and 20030021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030027) 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 3 ways as a sum of consecutive naturals, for example, 589102 + ... + 589135.

It is an arithmetic number, because the mean of its divisors is an integer number (5302071).

Almost surely, 2^20030029 is an apocalyptic number.

It is an amenable number.

20030029 is a deficient number, since it is larger than the sum of its proper divisors (1178255).

20030029 is a wasteful number, since it uses less digits than its factorization.

20030029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178254.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 20030029 is about 4475.4920399885. The cubic root of 20030029 is about 271.5775458021.

The spelling of 20030029 in words is "twenty million, thirty thousand, twenty-nine".