220502940 has 144 divisors (see below), whose sum is σ = 723945600. Its totient is φ = 49999488.

The previous prime is 220502939. The next prime is 220502941. The reversal of 220502940 is 49205022.

220502940 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 (220502939) and next prime (220502941).

It is a self number, because there is not a number n which added to its sum of digits gives 220502940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220502941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 526051 + ... + 526469.

It is an arithmetic number, because the mean of its divisors is an integer number (5027400).

Almost surely, 2^220502940 is an apocalyptic number.

220502940 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 220502940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361972800).

220502940 is an abundant number, since it is smaller than the sum of its proper divisors (503442660).

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

220502940 is a wasteful number, since it uses less digits than its factorization.

220502940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 220502940 is about 14849.3413995369. The cubic root of 220502940 is about 604.1407468441.

Adding to 220502940 its reverse (49205022), we get a palindrome (269707962).

The spelling of 220502940 in words is "two hundred twenty million, five hundred two thousand, nine hundred forty".