20871068 has 12 divisors (see below), whose sum is σ = 37784040. Its totient is φ = 10075632.

The previous prime is 20871049. The next prime is 20871077. The reversal of 20871068 is 86017802.

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, 89846 + ... + 90077.

It is an arithmetic number, because the mean of its divisors is an integer number (3148670).

Almost surely, 2^20871068 is an apocalyptic number.

It is an amenable number.

20871068 is a deficient number, since it is larger than the sum of its proper divisors (16912972).

20871068 is a wasteful number, since it uses less digits than its factorization.

20871068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179956 (or 179954 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 20871068 is about 4568.4864014244. The cubic root of 20871068 is about 275.3266333727.

The spelling of 20871068 in words is "twenty million, eight hundred seventy-one thousand, sixty-eight".