197896428288 has 432 divisors, whose sum is σ = 644571393760. Its totient is φ = 59535876096.

The previous prime is 197896428251. The next prime is 197896428319. The reversal of 197896428288 is 882824698791.

197896428288 is a `hidden beast` number, since 1 + 97 + 8 + 96 + 428 + 28 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a super-2 number, since 2×197896428288² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 198491406 + ... + 198492402.

Almost surely, 2^197896428288 is an apocalyptic number.

197896428288 is a gapful number since it is divisible by the number (18) 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 197896428288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322285696880).

197896428288 is an abundant number, since it is smaller than the sum of its proper divisors (446674965472).

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

197896428288 is an equidigital number, since it uses as much as digits as its factorization.

197896428288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129 (or 1062 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 72.

The spelling of 197896428288 in words is "one hundred ninety-seven billion, eight hundred ninety-six million, four hundred twenty-eight thousand, two hundred eighty-eight".