220378115 has 4 divisors (see below), whose sum is σ = 264453744. Its totient is φ = 176302488.

The previous prime is 220378099. The next prime is 220378121. The reversal of 220378115 is 511873022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220378115 - 2⁴ = 220378099 is a prime.

It is a Duffinian number.

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, 22037807 + ... + 22037816.

It is an arithmetic number, because the mean of its divisors is an integer number (66113436).

Almost surely, 2^220378115 is an apocalyptic number.

220378115 is a deficient number, since it is larger than the sum of its proper divisors (44075629).

220378115 is an equidigital number, since it uses as much as digits as its factorization.

220378115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44075628.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 220378115 is about 14845.1377561813. The cubic root of 220378115 is about 604.0267255326.

The spelling of 220378115 in words is "two hundred twenty million, three hundred seventy-eight thousand, one hundred fifteen".