220640026 has 8 divisors (see below), whose sum is σ = 335621664. Its totient is φ = 108766140.

The previous prime is 220640023. The next prime is 220640029. The reversal of 220640026 is 620046022.

It is a happy number.

220640026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220640023) and next prime (220640029).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 220639979 and 220640006.

It is not an unprimeable number, because it can be changed into a prime (220640023) 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, 776760 + ... + 777043.

It is an arithmetic number, because the mean of its divisors is an integer number (41952708).

Almost surely, 2^220640026 is an apocalyptic number.

220640026 is a deficient number, since it is larger than the sum of its proper divisors (114981638).

220640026 is a wasteful number, since it uses less digits than its factorization.

220640026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553876.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 220640026 is about 14853.9565772894. The cubic root of 220640026 is about 604.2659183899.

Adding to 220640026 its reverse (620046022), we get a palindrome (840686048).

The spelling of 220640026 in words is "two hundred twenty million, six hundred forty thousand, twenty-six".