20872726 has 12 divisors (see below), whose sum is σ = 36420948. Its totient is φ = 8945412.

The previous prime is 20872717. The next prime is 20872727. The reversal of 20872726 is 62727802.

It is a junction number, because it is equal to n+sod(n) for n = 20872691 and 20872700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20872727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106396 + ... + 106591.

It is an arithmetic number, because the mean of its divisors is an integer number (3035079).

Almost surely, 2^20872726 is an apocalyptic number.

20872726 is a deficient number, since it is larger than the sum of its proper divisors (15548222).

20872726 is a wasteful number, since it uses less digits than its factorization.

20872726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213003 (or 212996 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 20872726 is about 4568.6678583587. The cubic root of 20872726 is about 275.3339238393. Note that the first 3 decimals are identical.

The spelling of 20872726 in words is "twenty million, eight hundred seventy-two thousand, seven hundred twenty-six".