20466129 has 4 divisors (see below), whose sum is σ = 27288176. Its totient is φ = 13644084.

The previous prime is 20466119. The next prime is 20466139. The reversal of 20466129 is 92166402.

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 an interprime number because it is at equal distance from previous prime (20466119) and next prime (20466139).

It is not a de Polignac number, because 20466129 - 2⁷ = 20466001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20466096 and 20466105.

It is not an unprimeable number, because it can be changed into a prime (20466119) 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, 3411019 + ... + 3411024.

It is an arithmetic number, because the mean of its divisors is an integer number (6822044).

Almost surely, 2^20466129 is an apocalyptic number.

It is an amenable number.

20466129 is a deficient number, since it is larger than the sum of its proper divisors (6822047).

20466129 is an equidigital number, since it uses as much as digits as its factorization.

20466129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6822046.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20466129 is about 4523.9505965472. The cubic root of 20466129 is about 273.5343690899.

The spelling of 20466129 in words is "twenty million, four hundred sixty-six thousand, one hundred twenty-nine".