220003240 has 32 divisors (see below), whose sum is σ = 505543680. Its totient is φ = 86128192.

The previous prime is 220003237. The next prime is 220003279. The reversal of 220003240 is 42300022.

It is a super-2 number, since 2×220003240² = 96802851220995200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220003240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56632 + ... + 60391.

It is an arithmetic number, because the mean of its divisors is an integer number (15798240).

Almost surely, 2^220003240 is an apocalyptic number.

220003240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220003240 is an abundant number, since it is smaller than the sum of its proper divisors (285540440).

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

220003240 is a wasteful number, since it uses less digits than its factorization.

220003240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117081 (or 117077 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 220003240 is about 14832.5061941669. The cubic root of 220003240 is about 603.6840371905.

Adding to 220003240 its reverse (42300022), we get a palindrome (262303262).

The spelling of 220003240 in words is "two hundred twenty million, three thousand, two hundred forty".