2220528845 has 8 divisors (see below), whose sum is σ = 2665885176. Its totient is φ = 1775589376.

The previous prime is 2220528787. The next prime is 2220528847. The reversal of 2220528845 is 5488250222.

It can be written as a sum of positive squares in 4 ways, for example, as 110229001 + 2110299844 = 10499^2 + 45938^2 .

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 2220528845 - 2⁶ = 2220528781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220528799 and 2220528808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220528847) 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, 92372 + ... + 113901.

It is an arithmetic number, because the mean of its divisors is an integer number (333235647).

Almost surely, 2^2220528845 is an apocalyptic number.

It is an amenable number.

2220528845 is a deficient number, since it is larger than the sum of its proper divisors (445356331).

2220528845 is a wasteful number, since it uses less digits than its factorization.

2220528845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208431.

The product of its (nonzero) digits is 102400, while the sum is 38.

The square root of 2220528845 is about 47122.4876783898. The cubic root of 2220528845 is about 1304.6243287745.

The spelling of 2220528845 in words is "two billion, two hundred twenty million, five hundred twenty-eight thousand, eight hundred forty-five".