220143284 has 6 divisors (see below), whose sum is σ = 385250754. Its totient is φ = 110071640.

The previous prime is 220143283. The next prime is 220143317. The reversal of 220143284 is 482341022.

It can be written as a sum of positive squares in only one way, i.e., 129322384 + 90820900 = 11372^2 + 9530^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220143283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27517907 + ... + 27517914.

It is an arithmetic number, because the mean of its divisors is an integer number (64208459).

Almost surely, 2^220143284 is an apocalyptic number.

It is an amenable number.

220143284 is a deficient number, since it is larger than the sum of its proper divisors (165107470).

220143284 is a wasteful number, since it uses less digits than its factorization.

220143284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55035825 (or 55035823 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 220143284 is about 14837.2262906515. The cubic root of 220143284 is about 603.8121025697.

The spelling of 220143284 in words is "two hundred twenty million, one hundred forty-three thousand, two hundred eighty-four".