68243120 has 40 divisors (see below), whose sum is σ = 173091600. Its totient is φ = 24815360.

The previous prime is 68243113. The next prime is 68243143. The reversal of 68243120 is 2134286.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 68243120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37895 + ... + 39654.

It is an arithmetic number, because the mean of its divisors is an integer number (4327290).

Almost surely, 2^68243120 is an apocalyptic number.

It is an amenable number.

68243120 is an abundant number, since it is smaller than the sum of its proper divisors (104848480).

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

68243120 is a wasteful number, since it uses less digits than its factorization.

68243120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77573 (or 77567 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 68243120 is about 8260.9394138923. The cubic root of 68243120 is about 408.6513688709.

The spelling of 68243120 in words is "sixty-eight million, two hundred forty-three thousand, one hundred twenty".