196172020 has 96 divisors (see below), whose sum is σ = 467026560. Its totient is φ = 68597760.

The previous prime is 196171973. The next prime is 196172021. The reversal of 196172020 is 20271691.

It is a happy number.

It is a super-2 number, since 2×196172020² = 76966922861760800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 196172020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196172021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 841824 + ... + 842056.

It is an arithmetic number, because the mean of its divisors is an integer number (4864860).

Almost surely, 2^196172020 is an apocalyptic number.

196172020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196172020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233513280).

196172020 is an abundant number, since it is smaller than the sum of its proper divisors (270854540).

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

196172020 is a wasteful number, since it uses less digits than its factorization.

196172020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 196172020 is about 14006.1422240387. The cubic root of 196172020 is about 581.0484602848.

The spelling of 196172020 in words is "one hundred ninety-six million, one hundred seventy-two thousand, twenty".