20672196 has 24 divisors (see below), whose sum is σ = 49539840. Its totient is φ = 6704352.

The previous prime is 20672131. The next prime is 20672227. The reversal of 20672196 is 69127602.

It is a super-3 number, since 3×20672196³ (a number of 23 digits) contains 333 as substring.

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, 22836 + ... + 23723.

It is an arithmetic number, because the mean of its divisors is an integer number (2064160).

Almost surely, 2^20672196 is an apocalyptic number.

It is an amenable number.

20672196 is an abundant number, since it is smaller than the sum of its proper divisors (28867644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20672196 is a wasteful number, since it uses less digits than its factorization.

20672196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46603 (or 46601 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 20672196 is about 4546.6686705763. The cubic root of 20672196 is about 274.4493488184.

Adding to 20672196 its reverse (69127602), we get a palindrome (89799798).

The spelling of 20672196 in words is "twenty million, six hundred seventy-two thousand, one hundred ninety-six".