10405940 has 12 divisors (see below), whose sum is σ = 21852516. Its totient is φ = 4162368.

The previous prime is 10405897. The next prime is 10405949. The reversal of 10405940 is 4950401.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5189284 + 5216656 = 2278^2 + 2284^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10405949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260129 + ... + 260168.

It is an arithmetic number, because the mean of its divisors is an integer number (1821043).

Almost surely, 2^10405940 is an apocalyptic number.

10405940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10405940 is an abundant number, since it is smaller than the sum of its proper divisors (11446576).

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

10405940 is a wasteful number, since it uses less digits than its factorization.

10405940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520306 (or 520304 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 10405940 is about 3225.8239257591. The cubic root of 10405940 is about 218.3201255858.

The spelling of 10405940 in words is "ten million, four hundred five thousand, nine hundred forty".