78425726 has 8 divisors (see below), whose sum is σ = 124558560. Its totient is φ = 36906208.

The previous prime is 78425723. The next prime is 78425741. The reversal of 78425726 is 62752487.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78425723) 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, 1153286 + ... + 1153353.

It is an arithmetic number, because the mean of its divisors is an integer number (15569820).

Almost surely, 2^78425726 is an apocalyptic number.

78425726 is a deficient number, since it is larger than the sum of its proper divisors (46132834).

78425726 is a wasteful number, since it uses less digits than its factorization.

78425726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306658.

The product of its digits is 188160, while the sum is 41.

The square root of 78425726 is about 8855.8300570867. The cubic root of 78425726 is about 428.0418008785.

The spelling of 78425726 in words is "seventy-eight million, four hundred twenty-five thousand, seven hundred twenty-six".