78078002 has 8 divisors (see below), whose sum is σ = 117531696. Its totient is φ = 38900772.

The previous prime is 78077999. The next prime is 78078041. The reversal of 78078002 is 20087087.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 78078002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68408 + ... + 69539.

It is an arithmetic number, because the mean of its divisors is an integer number (14691462).

Almost surely, 2^78078002 is an apocalyptic number.

78078002 is a deficient number, since it is larger than the sum of its proper divisors (39453694).

78078002 is a wasteful number, since it uses less digits than its factorization.

78078002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138232.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 78078002 is about 8836.1757565137. The cubic root of 78078002 is about 427.4082463276.

The spelling of 78078002 in words is "seventy-eight million, seventy-eight thousand, two".