103440020 has 12 divisors (see below), whose sum is σ = 217224084. Its totient is φ = 41376000.

The previous prime is 103440017. The next prime is 103440023. The reversal of 103440020 is 20044301.

It is an interprime number because it is at equal distance from previous prime (103440017) and next prime (103440023).

It can be written as a sum of positive squares in 2 ways, for example, as 58308496 + 45131524 = 7636^2 + 6718^2 .

It is a junction number, because it is equal to n+sod(n) for n = 103439977 and 103440004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103440023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2585981 + ... + 2586020.

It is an arithmetic number, because the mean of its divisors is an integer number (18102007).

Almost surely, 2^103440020 is an apocalyptic number.

103440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103440020 is an abundant number, since it is smaller than the sum of its proper divisors (113784064).

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

103440020 is a wasteful number, since it uses less digits than its factorization.

103440020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5172010 (or 5172008 counting only the distinct ones).

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

The square root of 103440020 is about 10170.5466913043. The cubic root of 103440020 is about 469.4213793921.

Adding to 103440020 its reverse (20044301), we get a palindrome (123484321).

The spelling of 103440020 in words is "one hundred three million, four hundred forty thousand, twenty".