78888198 has 8 divisors (see below), whose sum is σ = 157776408. Its totient is φ = 26296064.

The previous prime is 78888197. The next prime is 78888233. The reversal of 78888198 is 89188887.

It is a sphenic number, since it is the product of 3 distinct primes.

78888198 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78888191) 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, 6574011 + ... + 6574022.

It is an arithmetic number, because the mean of its divisors is an integer number (19722051).

Almost surely, 2^78888198 is an apocalyptic number.

78888198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78888198 is a wasteful number, since it uses less digits than its factorization.

78888198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13148038.

The product of its digits is 2064384, while the sum is 57.

The square root of 78888198 is about 8881.9028366674. The cubic root of 78888198 is about 428.8815317220.

The spelling of 78888198 in words is "seventy-eight million, eight hundred eighty-eight thousand, one hundred ninety-eight".