20410340 has 12 divisors (see below), whose sum is σ = 42861756. Its totient is φ = 8164128.

The previous prime is 20410331. The next prime is 20410349. The reversal of 20410340 is 4301402.

It is an interprime number because it is at equal distance from previous prime (20410331) and next prime (20410349).

It can be written as a sum of positive squares in 2 ways, for example, as 4024036 + 16386304 = 2006^2 + 4048^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20410349) 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, 510239 + ... + 510278.

It is an arithmetic number, because the mean of its divisors is an integer number (3571813).

Almost surely, 2^20410340 is an apocalyptic number.

20410340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20410340 is an abundant number, since it is smaller than the sum of its proper divisors (22451416).

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

20410340 is a wasteful number, since it uses less digits than its factorization.

20410340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020526 (or 1020524 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20410340 is about 4517.7804284848. The cubic root of 20410340 is about 273.2855987764.

Adding to 20410340 its reverse (4301402), we get a palindrome (24711742).

The spelling of 20410340 in words is "twenty million, four hundred ten thousand, three hundred forty".