220386678 has 16 divisors (see below), whose sum is σ = 441801216. Its totient is φ = 73290920.

The previous prime is 220386659. The next prime is 220386701. The reversal of 220386678 is 876683022.

It is a congruent number.

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, 40026 + ... + 45197.

It is an arithmetic number, because the mean of its divisors is an integer number (27612576).

Almost surely, 2^220386678 is an apocalyptic number.

220386678 is an abundant number, since it is smaller than the sum of its proper divisors (221414538).

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

220386678 is a wasteful number, since it uses less digits than its factorization.

220386678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85659.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 220386678 is about 14845.4261643107. The cubic root of 220386678 is about 604.0345487745.

The spelling of 220386678 in words is "two hundred twenty million, three hundred eighty-six thousand, six hundred seventy-eight".