78078422 has 8 divisors (see below), whose sum is σ = 122209776. Its totient is φ = 37341832.

The previous prime is 78078409. The next prime is 78078431. The reversal of 78078422 is 22487087.

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

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, 848633 + ... + 848724.

It is an arithmetic number, because the mean of its divisors is an integer number (15276222).

Almost surely, 2^78078422 is an apocalyptic number.

78078422 is a deficient number, since it is larger than the sum of its proper divisors (44131354).

78078422 is a wasteful number, since it uses less digits than its factorization.

78078422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697382.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 78078422 is about 8836.1995224191. The cubic root of 78078422 is about 427.4090127029.

The spelling of 78078422 in words is "seventy-eight million, seventy-eight thousand, four hundred twenty-two".