68019400 has 48 divisors (see below), whose sum is σ = 158918400. Its totient is φ = 27074880.

The previous prime is 68019361. The next prime is 68019403. The reversal of 68019400 is 491086.

It is not an unprimeable number, because it can be changed into a prime (68019403) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 47089 + ... + 48511.

It is an arithmetic number, because the mean of its divisors is an integer number (3310800).

Almost surely, 2^68019400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68019400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79459200).

68019400 is an abundant number, since it is smaller than the sum of its proper divisors (90899000).

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

68019400 is a wasteful number, since it uses less digits than its factorization.

68019400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678 (or 1669 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 68019400 is about 8247.3874651310. The cubic root of 68019400 is about 408.2043222407.

The spelling of 68019400 in words is "sixty-eight million, nineteen thousand, four hundred".