20113712 has 20 divisors (see below), whose sum is σ = 39707280. Its totient is φ = 9866688.

The previous prime is 20113673. The next prime is 20113721. The reversal of 20113712 is 21731102.

It is a super-2 number, since 2×20113712² = 809122820837888, which contains 22 as substring.

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, 11012 + ... + 12707.

It is an arithmetic number, because the mean of its divisors is an integer number (1985364).

Almost surely, 2^20113712 is an apocalyptic number.

It is an amenable number.

20113712 is a deficient number, since it is larger than the sum of its proper divisors (19593568).

20113712 is a wasteful number, since it uses less digits than its factorization.

20113712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23780 (or 23774 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 20113712 is about 4484.8313234725. The cubic root of 20113712 is about 271.9552261942.

Adding to 20113712 its reverse (21731102), we get a palindrome (41844814).

The spelling of 20113712 in words is "twenty million, one hundred thirteen thousand, seven hundred twelve".