20922529 has 8 divisors (see below), whose sum is σ = 22256640. Its totient is φ = 19599936.

The previous prime is 20922523. The next prime is 20922533. The reversal of 20922529 is 92522902.

It is a happy number.

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 20922529 - 2⁹ = 20922017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20922529.

It is not an unprimeable number, because it can be changed into a prime (20922523) 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 7 ways as a sum of consecutive naturals, for example, 1032 + ... + 6550.

It is an arithmetic number, because the mean of its divisors is an integer number (2782080).

Almost surely, 2^20922529 is an apocalyptic number.

It is an amenable number.

20922529 is a deficient number, since it is larger than the sum of its proper divisors (1334111).

20922529 is a wasteful number, since it uses less digits than its factorization.

20922529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 20922529 is about 4574.1151056789. The cubic root of 20922529 is about 275.5527351199.

The spelling of 20922529 in words is "twenty million, nine hundred twenty-two thousand, five hundred twenty-nine".