220527640 has 16 divisors (see below), whose sum is σ = 496187280. Its totient is φ = 88211040.

The previous prime is 220527577. The next prime is 220527641. The reversal of 220527640 is 46725022.

220527640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220527599 and 220527608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220527641) 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, 2756556 + ... + 2756635.

It is an arithmetic number, because the mean of its divisors is an integer number (31011705).

Almost surely, 2^220527640 is an apocalyptic number.

220527640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220527640 is an abundant number, since it is smaller than the sum of its proper divisors (275659640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220527640 is a wasteful number, since it uses less digits than its factorization.

220527640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513202 (or 5513198 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 220527640 is about 14850.1730629646. The cubic root of 220527640 is about 604.1633039422.

It can be divided in two parts, 22052 and 7640, that added together give a palindrome (29692).

The spelling of 220527640 in words is "two hundred twenty million, five hundred twenty-seven thousand, six hundred forty".