20002340 has 12 divisors (see below), whose sum is σ = 42004956. Its totient is φ = 8000928.

The previous prime is 20002337. The next prime is 20002361. The reversal of 20002340 is 4320002.

It can be written as a sum of positive squares in 2 ways, for example, as 15241216 + 4761124 = 3904^2 + 2182^2 .

20002340 is a modest number, since divided by 2340 gives 20 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500039 + ... + 500078.

It is an arithmetic number, because the mean of its divisors is an integer number (3500413).

Almost surely, 2^20002340 is an apocalyptic number.

20002340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002340 is an abundant number, since it is smaller than the sum of its proper divisors (22002616).

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

20002340 is a wasteful number, since it uses less digits than its factorization.

20002340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000126 (or 1000124 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20002340 is about 4472.3975673010. The cubic root of 20002340 is about 271.4523474754.

Adding to 20002340 its reverse (4320002), we get a palindrome (24322342).

The spelling of 20002340 in words is "twenty million, two thousand, three hundred forty".