20013116 has 12 divisors (see below), whose sum is σ = 35109480. Its totient is φ = 9981840.

The previous prime is 20013109. The next prime is 20013121. The reversal of 20013116 is 61131002.

It is a self number, because there is not a number n which added to its sum of digits gives 20013116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4295 + ... + 7646.

It is an arithmetic number, because the mean of its divisors is an integer number (2925790).

Almost surely, 2^20013116 is an apocalyptic number.

It is an amenable number.

20013116 is a deficient number, since it is larger than the sum of its proper divisors (15096364).

20013116 is a wasteful number, since it uses less digits than its factorization.

20013116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12364 (or 12362 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 20013116 is about 4473.6021280396. The cubic root of 20013116 is about 271.5010858622.

Adding to 20013116 its reverse (61131002), we get a palindrome (81144118).

The spelling of 20013116 in words is "twenty million, thirteen thousand, one hundred sixteen".