220030477 has 8 divisors (see below), whose sum is σ = 229094712. Its totient is φ = 211142400.

The previous prime is 220030471. The next prime is 220030483. The reversal of 220030477 is 774030022.

220030477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220030471) and next prime (220030483).

It can be written as a sum of positive squares in 4 ways, for example, as 4116841 + 215913636 = 2029^2 + 14694^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 220030477 - 2¹⁵ = 219997709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220030471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41488 + ... + 46489.

It is an arithmetic number, because the mean of its divisors is an integer number (28636839).

Almost surely, 2^220030477 is an apocalyptic number.

It is an amenable number.

220030477 is a deficient number, since it is larger than the sum of its proper divisors (9064235).

220030477 is an equidigital number, since it uses as much as digits as its factorization.

220030477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88079.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 220030477 is about 14833.4243180730. The cubic root of 220030477 is about 603.7089487382.

Adding to 220030477 its reverse (774030022), we get a palindrome (994060499).

The spelling of 220030477 in words is "two hundred twenty million, thirty thousand, four hundred seventy-seven".