220512770 has 8 divisors (see below), whose sum is σ = 396923004. Its totient is φ = 88205104.

The previous prime is 220512749. The next prime is 220512791. The reversal of 220512770 is 77215022.

It is an interprime number because it is at equal distance from previous prime (220512749) and next prime (220512791).

It can be written as a sum of positive squares in 2 ways, for example, as 204118369 + 16394401 = 14287^2 + 4049^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11025629 + ... + 11025648.

Almost surely, 2^220512770 is an apocalyptic number.

220512770 is a deficient number, since it is larger than the sum of its proper divisors (176410234).

220512770 is a wasteful number, since it uses less digits than its factorization.

220512770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22051284.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 220512770 is about 14849.6723869586. The cubic root of 220512770 is about 604.1497242230.

Adding to 220512770 its reverse (77215022), we get a palindrome (297727792).

The spelling of 220512770 in words is "two hundred twenty million, five hundred twelve thousand, seven hundred seventy".