2003400220 has 48 divisors (see below), whose sum is σ = 4334148000. Its totient is φ = 777390080.

The previous prime is 2003400197. The next prime is 2003400221. The reversal of 2003400220 is 220043002.

It is a super-2 number, since 2×2003400220² = 8027224882992096800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2003400220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003400221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139956 + ... + 153604.

It is an arithmetic number, because the mean of its divisors is an integer number (90294750).

Almost surely, 2^2003400220 is an apocalyptic number.

2003400220 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 2003400220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2167074000).

2003400220 is an abundant number, since it is smaller than the sum of its proper divisors (2330747780).

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

2003400220 is a wasteful number, since it uses less digits than its factorization.

2003400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13878 (or 13876 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 2003400220 is about 44759.3590213265. The cubic root of 2003400220 is about 1260.6346471083.

Adding to 2003400220 its reverse (220043002), we get a palindrome (2223443222).

The spelling of 2003400220 in words is "two billion, three million, four hundred thousand, two hundred twenty".