20429065 has 8 divisors (see below), whose sum is σ = 24594120. Its totient is φ = 16290432.

The previous prime is 20429063. The next prime is 20429077. The reversal of 20429065 is 56092402.

It can be written as a sum of positive squares in 4 ways, for example, as 331776 + 20097289 = 576^2 + 4483^2 .

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 20429065 - 2¹ = 20429063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20429063) 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 7 ways as a sum of consecutive naturals, for example, 4860 + ... + 8029.

It is an arithmetic number, because the mean of its divisors is an integer number (3074265).

Almost surely, 2^20429065 is an apocalyptic number.

It is an amenable number.

20429065 is a deficient number, since it is larger than the sum of its proper divisors (4165055).

20429065 is a wasteful number, since it uses less digits than its factorization.

20429065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13211.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 20429065 is about 4519.8523205963. The cubic root of 20429065 is about 273.3691464410.

The spelling of 20429065 in words is "twenty million, four hundred twenty-nine thousand, sixty-five".