68115420 has 72 divisors (see below), whose sum is σ = 215613216. Its totient is φ = 17373312.

The previous prime is 68115419. The next prime is 68115449. The reversal of 68115420 is 2451186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4087 + ... + 12366.

It is an arithmetic number, because the mean of its divisors is an integer number (2994628).

Almost surely, 2^68115420 is an apocalyptic number.

68115420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68115420 is an abundant number, since it is smaller than the sum of its proper divisors (147497796).

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

68115420 is a wasteful number, since it uses less digits than its factorization.

68115420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16491 (or 16486 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 68115420 is about 8253.2066495393. The cubic root of 68115420 is about 408.3963132992.

The spelling of 68115420 in words is "sixty-eight million, one hundred fifteen thousand, four hundred twenty".