20475056 has 20 divisors (see below), whose sum is σ = 45337872. Its totient is φ = 8774976.

The previous prime is 20475047. The next prime is 20475071. The reversal of 20475056 is 65057402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 91295 + ... + 91518.

Almost surely, 2^20475056 is an apocalyptic number.

It is an amenable number.

20475056 is an abundant number, since it is smaller than the sum of its proper divisors (24862816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20475056 is a wasteful number, since it uses less digits than its factorization.

20475056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182828 (or 182822 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 20475056 is about 4524.9371266350. The cubic root of 20475056 is about 273.5741337561.

The spelling of 20475056 in words is "twenty million, four hundred seventy-five thousand, fifty-six".