20873210 has 16 divisors (see below), whose sum is σ = 39549600. Its totient is φ = 7909776.

The previous prime is 20873207. The next prime is 20873221. The reversal of 20873210 is 1237802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54740 + ... + 55119.

It is an arithmetic number, because the mean of its divisors is an integer number (2471850).

Almost surely, 2^20873210 is an apocalyptic number.

20873210 is a deficient number, since it is larger than the sum of its proper divisors (18676390).

20873210 is a wasteful number, since it uses less digits than its factorization.

20873210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109885.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20873210 is about 4568.7208275402. The cubic root of 20873210 is about 275.3360519847.

The spelling of 20873210 in words is "twenty million, eight hundred seventy-three thousand, two hundred ten".