78055386 has 16 divisors (see below), whose sum is σ = 156437184. Its totient is φ = 25964064.

The previous prime is 78055301. The next prime is 78055409. The reversal of 78055386 is 68355087.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10435 + ... + 16278.

It is an arithmetic number, because the mean of its divisors is an integer number (9777324).

Almost surely, 2^78055386 is an apocalyptic number.

78055386 is an abundant number, since it is smaller than the sum of its proper divisors (78381798).

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

78055386 is a wasteful number, since it uses less digits than its factorization.

78055386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27205.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 78055386 is about 8834.8959246841. The cubic root of 78055386 is about 427.3669747867.

The spelling of 78055386 in words is "seventy-eight million, fifty-five thousand, three hundred eighty-six".