68128896 has 96 divisors (see below), whose sum is σ = 198985680. Its totient is φ = 20482560.

The previous prime is 68128891. The next prime is 68128913. The reversal of 68128896 is 69882186.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (68128891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 536385 + ... + 536511.

Almost surely, 2^68128896 is an apocalyptic number.

68128896 is a gapful number since it is divisible by the number (66) 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 68128896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99492840).

68128896 is an abundant number, since it is smaller than the sum of its proper divisors (130856784).

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

68128896 is a wasteful number, since it uses less digits than its factorization.

68128896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 143 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 68128896 is about 8254.0230191101. The cubic root of 68128896 is about 408.4232439894.

The spelling of 68128896 in words is "sixty-eight million, one hundred twenty-eight thousand, eight hundred ninety-six".