220110640 has 20 divisors (see below), whose sum is σ = 511757424. Its totient is φ = 88044224.

The previous prime is 220110629. The next prime is 220110641. The reversal of 220110640 is 46011022.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (220110641) 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, 1375612 + ... + 1375771.

Almost surely, 2^220110640 is an apocalyptic number.

220110640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220110640 is an abundant number, since it is smaller than the sum of its proper divisors (291646784).

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

220110640 is a wasteful number, since it uses less digits than its factorization.

220110640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751396 (or 2751390 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 220110640 is about 14836.1261790267. The cubic root of 220110640 is about 603.7822556199.

Adding to 220110640 its reverse (46011022), we get a palindrome (266121662).

The spelling of 220110640 in words is "two hundred twenty million, one hundred ten thousand, six hundred forty".