20111029 has 8 divisors (see below), whose sum is σ = 20514560. Its totient is φ = 19710000.

The previous prime is 20111027. The next prime is 20111053. The reversal of 20111029 is 92011102.

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

It is a cyclic number.

It is not a de Polignac number, because 20111029 - 2¹ = 20111027 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26404 + ... + 27154.

It is an arithmetic number, because the mean of its divisors is an integer number (2564320).

Almost surely, 2^20111029 is an apocalyptic number.

It is an amenable number.

20111029 is a deficient number, since it is larger than the sum of its proper divisors (403531).

20111029 is an equidigital number, since it uses as much as digits as its factorization.

20111029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 20111029 is about 4484.5321941090. The cubic root of 20111029 is about 271.9431334766.

The spelling of 20111029 in words is "twenty million, one hundred eleven thousand, twenty-nine".