1220078 has 8 divisors (see below), whose sum is σ = 1874880. Its totient is φ = 595120.

The previous prime is 1220077. The next prime is 1220099. The reversal of 1220078 is 8700221.

1220078 is nontrivially palindromic in base 5.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7358 + ... + 7521.

It is an arithmetic number, because the mean of its divisors is an integer number (234360).

2^1220078 is an apocalyptic number.

1220078 is a deficient number, since it is larger than the sum of its proper divisors (654802).

1220078 is a wasteful number, since it uses less digits than its factorization.

1220078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14922.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1220078 is about 1104.5714100953. The cubic root of 1220078 is about 106.8552501609.

Adding to 1220078 its reverse (8700221), we get a palindrome (9920299).

The spelling of 1220078 in words is "one million, two hundred twenty thousand, seventy-eight".