20229029 has 4 divisors (see below), whose sum is σ = 21108576. Its totient is φ = 19349484.

The previous prime is 20229007. The next prime is 20229067. The reversal of 20229029 is 92092202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20229029 is a prime.

It is a super-2 number, since 2×20229029² = 818427228565682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20228989 and 20229007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20229089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439739 + ... + 439784.

It is an arithmetic number, because the mean of its divisors is an integer number (5277144).

Almost surely, 2^20229029 is an apocalyptic number.

It is an amenable number.

20229029 is a deficient number, since it is larger than the sum of its proper divisors (879547).

20229029 is an equidigital number, since it uses as much as digits as its factorization.

20229029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879546.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20229029 is about 4497.6692853077. The cubic root of 20229029 is about 272.4739654728.

The spelling of 20229029 in words is "twenty million, two hundred twenty-nine thousand, twenty-nine".