20823196 has 24 divisors (see below), whose sum is σ = 37807616. Its totient is φ = 10024560.

The previous prime is 20823169. The next prime is 20823239. The reversal of 20823196 is 69132802.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37795 + ... + 38341.

Almost surely, 2^20823196 is an apocalyptic number.

It is an amenable number.

20823196 is a deficient number, since it is larger than the sum of its proper divisors (16984420).

20823196 is a wasteful number, since it uses less digits than its factorization.

20823196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20823196 is about 4563.2440215268. The cubic root of 20823196 is about 275.1159665175.

Adding to 20823196 its reverse (69132802), we get a palindrome (89955998).

The spelling of 20823196 in words is "twenty million, eight hundred twenty-three thousand, one hundred ninety-six".