20069529 has 8 divisors (see below), whose sum is σ = 28167840. Its totient is φ = 12675456.

The previous prime is 20069527. The next prime is 20069531. The reversal of 20069529 is 92596002.

It is an interprime number because it is at equal distance from previous prime (20069527) and next prime (20069531).

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

It is not a de Polignac number, because 20069529 - 2¹ = 20069527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20069529.

It is not an unprimeable number, because it can be changed into a prime (20069521) 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, 175992 + ... + 176105.

It is an arithmetic number, because the mean of its divisors is an integer number (3520980).

Almost surely, 2^20069529 is an apocalyptic number.

It is an amenable number.

20069529 is a deficient number, since it is larger than the sum of its proper divisors (8098311).

20069529 is a wasteful number, since it uses less digits than its factorization.

20069529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352119.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 20069529 is about 4479.9027891239. The cubic root of 20069529 is about 271.7559490921.

The spelling of 20069529 in words is "twenty million, sixty-nine thousand, five hundred twenty-nine".