220000078 has 4 divisors (see below), whose sum is σ = 330000120. Its totient is φ = 110000038.

The previous prime is 220000073. The next prime is 220000141. The reversal of 220000078 is 870000022.

220000078 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220000073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55000018 + ... + 55000021.

It is an arithmetic number, because the mean of its divisors is an integer number (82500030).

Almost surely, 2^220000078 is an apocalyptic number.

220000078 is a deficient number, since it is larger than the sum of its proper divisors (110000042).

220000078 is a wasteful number, since it uses less digits than its factorization.

220000078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110000041.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 220000078 is about 14832.3996035706. The cubic root of 220000078 is about 603.6811450239.

The spelling of 220000078 in words is "two hundred twenty million, seventy-eight", and thus it is an aban number.