220040544 has 48 divisors (see below), whose sum is σ = 578370240. Its totient is φ = 73249920.

The previous prime is 220040507. The next prime is 220040551. The reversal of 220040544 is 445040022.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 220040544.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 139279 + ... + 140849.

It is an arithmetic number, because the mean of its divisors is an integer number (12049380).

Almost surely, 2^220040544 is an apocalyptic number.

220040544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220040544 is an abundant number, since it is smaller than the sum of its proper divisors (358329696).

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

220040544 is a wasteful number, since it uses less digits than its factorization.

220040544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043 (or 3035 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 220040544 is about 14833.7636491890. The cubic root of 220040544 is about 603.7181557132.

Adding to 220040544 its reverse (445040022), we get a palindrome (665080566).

The spelling of 220040544 in words is "two hundred twenty million, forty thousand, five hundred forty-four".