78426006 has 8 divisors (see below), whose sum is σ = 156852024. Its totient is φ = 26142000.

The previous prime is 78425987. The next prime is 78426011. The reversal of 78426006 is 60062487.

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

78426006 is an admirable number.

It is a super-2 number, since 2×78426006² = 12301276834224072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6535495 + ... + 6535506.

It is an arithmetic number, because the mean of its divisors is an integer number (19606503).

Almost surely, 2^78426006 is an apocalyptic number.

78426006 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.

78426006 is a wasteful number, since it uses less digits than its factorization.

78426006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13071006.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 78426006 is about 8855.8458658674. The cubic root of 78426006 is about 428.0423102843.

The spelling of 78426006 in words is "seventy-eight million, four hundred twenty-six thousand, six".