20655116 has 12 divisors (see below), whose sum is σ = 36240288. Its totient is φ = 10300752.

The previous prime is 20655101. The next prime is 20655143. The reversal of 20655116 is 61155602.

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, 4916 + ... + 8091.

It is an arithmetic number, because the mean of its divisors is an integer number (3020024).

Almost surely, 2^20655116 is an apocalyptic number.

It is an amenable number.

20655116 is a deficient number, since it is larger than the sum of its proper divisors (15585172).

20655116 is a wasteful number, since it uses less digits than its factorization.

20655116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13408 (or 13406 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 20655116 is about 4544.7899841467. The cubic root of 20655116 is about 274.3737418456.

The spelling of 20655116 in words is "twenty million, six hundred fifty-five thousand, one hundred sixteen".