20871796 has 12 divisors (see below), whose sum is σ = 39846240. Its totient is φ = 9487160.

The previous prime is 20871769. The next prime is 20871853. The reversal of 20871796 is 69717802.

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, 237136 + ... + 237223.

It is an arithmetic number, because the mean of its divisors is an integer number (3320520).

Almost surely, 2^20871796 is an apocalyptic number.

It is an amenable number.

20871796 is a deficient number, since it is larger than the sum of its proper divisors (18974444).

20871796 is a wasteful number, since it uses less digits than its factorization.

20871796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474374 (or 474372 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 20871796 is about 4568.5660770093. The cubic root of 20871796 is about 275.3298345419.

It can be divided in two parts, 2087 and 1796, that added together give a palindrome (3883).

The spelling of 20871796 in words is "twenty million, eight hundred seventy-one thousand, seven hundred ninety-six".