220140240 has 40 divisors (see below), whose sum is σ = 682435488. Its totient is φ = 58704000.

The previous prime is 220140233. The next prime is 220140241. The reversal of 220140240 is 42041022.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220140241) 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 7 ways as a sum of consecutive naturals, for example, 458386 + ... + 458865.

Almost surely, 2^220140240 is an apocalyptic number.

220140240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220140240 is an abundant number, since it is smaller than the sum of its proper divisors (462295248).

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

220140240 is a wasteful number, since it uses less digits than its factorization.

220140240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917267 (or 917261 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 220140240 is about 14837.1237104770. The cubic root of 220140240 is about 603.8093195148.

Adding to 220140240 its reverse (42041022), we get a palindrome (262181262).

The spelling of 220140240 in words is "two hundred twenty million, one hundred forty thousand, two hundred forty".