68390352 has 160 divisors (see below), whose sum is σ = 208915200. Its totient is φ = 21385728.

The previous prime is 68390347. The next prime is 68390353. The reversal of 68390352 is 25309386.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68390353) 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 31 ways as a sum of consecutive naturals, for example, 663933 + ... + 664035.

It is an arithmetic number, because the mean of its divisors is an integer number (1305720).

Almost surely, 2^68390352 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 68390352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104457600).

68390352 is an abundant number, since it is smaller than the sum of its proper divisors (140524848).

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

68390352 is a wasteful number, since it uses less digits than its factorization.

68390352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 68390352 is about 8269.8459477792. The cubic root of 68390352 is about 408.9450411664.

The spelling of 68390352 in words is "sixty-eight million, three hundred ninety thousand, three hundred fifty-two".