220340040 has 64 divisors (see below), whose sum is σ = 663284160. Its totient is φ = 58556160.

The previous prime is 220340039. The next prime is 220340053. The reversal of 220340040 is 40043022.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33850 + ... + 39830.

It is an arithmetic number, because the mean of its divisors is an integer number (10363815).

Almost surely, 2^220340040 is an apocalyptic number.

220340040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220340040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331642080).

220340040 is an abundant number, since it is smaller than the sum of its proper divisors (442944120).

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

220340040 is a wasteful number, since it uses less digits than its factorization.

220340040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6302 (or 6298 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 220340040 is about 14843.8552943634. The cubic root of 220340040 is about 603.9919373805.

Adding to 220340040 its reverse (40043022), we get a palindrome (260383062).

The spelling of 220340040 in words is "two hundred twenty million, three hundred forty thousand, forty".