10840040 has 32 divisors (see below), whose sum is σ = 24484680. Its totient is φ = 4319232.

The previous prime is 10840021. The next prime is 10840057. The reversal of 10840040 is 4004801.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10407076 + 432964 = 3226^2 + 658^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17984 + ... + 18576.

Almost surely, 2^10840040 is an apocalyptic number.

10840040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10840040 is an abundant number, since it is smaller than the sum of its proper divisors (13644640).

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

10840040 is a wasteful number, since it uses less digits than its factorization.

10840040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 10840040 is about 3292.4216011927. The cubic root of 10840040 is about 221.3147171485.

Adding to 10840040 its reverse (4004801), we get a palindrome (14844841).

The spelling of 10840040 in words is "ten million, eight hundred forty thousand, forty".