1220450506 has 16 divisors (see below), whose sum is σ = 1997745120. Its totient is φ = 554571280.

The previous prime is 1220450489. The next prime is 1220450521. The reversal of 1220450506 is 6050540221.

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, 80805 + ... + 94711.

It is an arithmetic number, because the mean of its divisors is an integer number (124859070).

Almost surely, 2^1220450506 is an apocalyptic number.

1220450506 is a deficient number, since it is larger than the sum of its proper divisors (777294614).

1220450506 is a wasteful number, since it uses less digits than its factorization.

1220450506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17909.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1220450506 is about 34934.9467725371. The cubic root of 1220450506 is about 1068.6612382948.

Adding to 1220450506 its reverse (6050540221), we get a palindrome (7270990727).

The spelling of 1220450506 in words is "one billion, two hundred twenty million, four hundred fifty thousand, five hundred six".