10440781 has 8 divisors (see below), whose sum is σ = 11733120. Its totient is φ = 9218352.

The previous prime is 10440779. The next prime is 10440799. The reversal of 10440781 is 18704401.

10440781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10440781 - 2¹ = 10440779 is a prime.

It is a super-2 number, since 2×10440781² = 218019815779922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10443781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17161 + ... + 17758.

It is an arithmetic number, because the mean of its divisors is an integer number (1466640).

Almost surely, 2^10440781 is an apocalyptic number.

It is an amenable number.

10440781 is a deficient number, since it is larger than the sum of its proper divisors (1292339).

10440781 is a wasteful number, since it uses less digits than its factorization.

10440781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34955.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 10440781 is about 3231.2197387364. The cubic root of 10440781 is about 218.5635127903.

The spelling of 10440781 in words is "ten million, four hundred forty thousand, seven hundred eighty-one".