20011056 has 40 divisors (see below), whose sum is σ = 55673520. Its totient is φ = 6157056.

The previous prime is 20011037. The next prime is 20011067. The reversal of 20011056 is 65011002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15411 + ... + 16658.

It is an arithmetic number, because the mean of its divisors is an integer number (1391838).

Almost surely, 2^20011056 is an apocalyptic number.

20011056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20011056 is an abundant number, since it is smaller than the sum of its proper divisors (35662464).

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

20011056 is a wasteful number, since it uses less digits than its factorization.

20011056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32093 (or 32087 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 20011056 is about 4473.3718825959. The cubic root of 20011056 is about 271.4917701143.

Adding to 20011056 its reverse (65011002), we get a palindrome (85022058).

The spelling of 20011056 in words is "twenty million, eleven thousand, fifty-six".