196712172 has 24 divisors (see below), whose sum is σ = 509994800. Its totient is φ = 65570688.

The previous prime is 196712171. The next prime is 196712179. The reversal of 196712172 is 271217691.

It is a happy number.

It is a super-2 number, since 2×196712172² = 77391357225915168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (196712171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910597 + ... + 910812.

Almost surely, 2^196712172 is an apocalyptic number.

196712172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

196712172 is an abundant number, since it is smaller than the sum of its proper divisors (313282628).

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

196712172 is a wasteful number, since it uses less digits than its factorization.

196712172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821422 (or 1821414 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 196712172 is about 14025.4116517128. The cubic root of 196712172 is about 581.5812696456.

The spelling of 196712172 in words is "one hundred ninety-six million, seven hundred twelve thousand, one hundred seventy-two".