78000288 has 24 divisors (see below), whose sum is σ = 204751008. Its totient is φ = 26000064.

The previous prime is 78000287. The next prime is 78000311. The reversal of 78000288 is 88200087.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (78000287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406156 + ... + 406347.

It is an arithmetic number, because the mean of its divisors is an integer number (8531292).

Almost surely, 2^78000288 is an apocalyptic number.

It is an amenable number.

78000288 is an abundant number, since it is smaller than the sum of its proper divisors (126750720).

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

78000288 is a wasteful number, since it uses less digits than its factorization.

78000288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812516 (or 812508 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 78000288 is about 8831.7771711021. Note that the first 3 decimals coincide. The cubic root of 78000288 is about 427.2663940348.

The spelling of 78000288 in words is "seventy-eight million, two hundred eighty-eight", and thus it is an aban number.