20616268 has 12 divisors (see below), whose sum is σ = 36846432. Its totient is φ = 10088720.

The previous prime is 20616263. The next prime is 20616269. The reversal of 20616268 is 86261602.

It is not an unprimeable number, because it can be changed into a prime (20616263) by changing a digit.

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, 54643 + ... + 55018.

It is an arithmetic number, because the mean of its divisors is an integer number (3070536).

Almost surely, 2^20616268 is an apocalyptic number.

It is an amenable number.

20616268 is a deficient number, since it is larger than the sum of its proper divisors (16230164).

20616268 is a wasteful number, since it uses less digits than its factorization.

20616268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109712 (or 109710 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 20616268 is about 4540.5140678121. The cubic root of 20616268 is about 274.2016204772.

The spelling of 20616268 in words is "twenty million, six hundred sixteen thousand, two hundred sixty-eight".