20465529 has 16 divisors (see below), whose sum is σ = 31497600. Its totient is φ = 11577600.

The previous prime is 20465521. The next prime is 20465531. The reversal of 20465529 is 92556402.

It is not a de Polignac number, because 20465529 - 2³ = 20465521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20465529.

It is not an unprimeable number, because it can be changed into a prime (20465521) 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 15 ways as a sum of consecutive naturals, for example, 2704 + ... + 6945.

It is an arithmetic number, because the mean of its divisors is an integer number (1968600).

Almost surely, 2^20465529 is an apocalyptic number.

It is an amenable number.

20465529 is a deficient number, since it is larger than the sum of its proper divisors (11032071).

20465529 is a wasteful number, since it uses less digits than its factorization.

20465529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9760.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 20465529 is about 4523.8842823397. The cubic root of 20465529 is about 273.5316960192.

The spelling of 20465529 in words is "twenty million, four hundred sixty-five thousand, five hundred twenty-nine".