68138382 has 16 divisors (see below), whose sum is σ = 146759760. Its totient is φ = 20965632.

The previous prime is 68138353. The next prime is 68138387. The reversal of 68138382 is 28383186.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 68138382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68138387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436707 + ... + 436862.

It is an arithmetic number, because the mean of its divisors is an integer number (9172485).

Almost surely, 2^68138382 is an apocalyptic number.

68138382 is an abundant number, since it is smaller than the sum of its proper divisors (78621378).

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

68138382 is a wasteful number, since it uses less digits than its factorization.

68138382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873587.

The product of its digits is 55296, while the sum is 39.

The square root of 68138382 is about 8254.5976279889. The cubic root of 68138382 is about 408.4421988594.

The spelling of 68138382 in words is "sixty-eight million, one hundred thirty-eight thousand, three hundred eighty-two".