20197160 has 16 divisors (see below), whose sum is σ = 45443700. Its totient is φ = 8078848.

The previous prime is 20197159. The next prime is 20197183. The reversal of 20197160 is 6179102.

It can be written as a sum of positive squares in 2 ways, for example, as 19945156 + 252004 = 4466^2 + 502^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252425 + ... + 252504.

Almost surely, 2^20197160 is an apocalyptic number.

20197160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20197160 is an abundant number, since it is smaller than the sum of its proper divisors (25246540).

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

20197160 is a wasteful number, since it uses less digits than its factorization.

20197160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504940 (or 504936 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 20197160 is about 4494.1250538898. The cubic root of 20197160 is about 272.3308042628.

The spelling of 20197160 in words is "twenty million, one hundred ninety-seven thousand, one hundred sixty".