220315540 has 12 divisors (see below), whose sum is σ = 462662676. Its totient is φ = 88126208.

The previous prime is 220315519. The next prime is 220315549. The reversal of 220315540 is 45513022.

It can be written as a sum of positive squares in 2 ways, for example, as 176039824 + 44275716 = 13268^2 + 6654^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220315549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5507869 + ... + 5507908.

It is an arithmetic number, because the mean of its divisors is an integer number (38555223).

Almost surely, 2^220315540 is an apocalyptic number.

220315540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220315540 is an abundant number, since it is smaller than the sum of its proper divisors (242347136).

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

220315540 is a wasteful number, since it uses less digits than its factorization.

220315540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11015786 (or 11015784 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 220315540 is about 14843.0300141177. The cubic root of 220315540 is about 603.9695502390.

Adding to 220315540 its reverse (45513022), we get a palindrome (265828562).

The spelling of 220315540 in words is "two hundred twenty million, three hundred fifteen thousand, five hundred forty".