20529056 has 24 divisors (see below), whose sum is σ = 40551840. Its totient is φ = 10230208.

The previous prime is 20529053. The next prime is 20529077. The reversal of 20529056 is 65092502.

It is a super-2 number, since 2×20529056² = 842884280502272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20529053) 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 3 ways as a sum of consecutive naturals, for example, 10595 + ... + 12381.

It is an arithmetic number, because the mean of its divisors is an integer number (1689660).

Almost surely, 2^20529056 is an apocalyptic number.

It is an amenable number.

20529056 is a deficient number, since it is larger than the sum of its proper divisors (20022784).

20529056 is a wasteful number, since it uses less digits than its factorization.

20529056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156 (or 2148 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 20529056 is about 4530.9001313205. The cubic root of 20529056 is about 273.8144267090.

The spelling of 20529056 in words is "twenty million, five hundred twenty-nine thousand, fifty-six".