10438781 has 8 divisors (see below), whose sum is σ = 10663104. Its totient is φ = 10216800.

The previous prime is 10438763. The next prime is 10438783. The reversal of 10438781 is 18783401.

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

It is a cyclic number.

It is not a de Polignac number, because 10438781 - 2⁶ = 10438717 is a prime.

It is a super-2 number, since 2×10438781² = 217936297531922, 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 (10438783) 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, 10550 + ... + 11496.

It is an arithmetic number, because the mean of its divisors is an integer number (1332888).

Almost surely, 2^10438781 is an apocalyptic number.

It is an amenable number.

10438781 is a deficient number, since it is larger than the sum of its proper divisors (224323).

10438781 is an equidigital number, since it uses as much as digits as its factorization.

10438781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 10438781 is about 3230.9102432596. The cubic root of 10438781 is about 218.5495561415.

The spelling of 10438781 in words is "ten million, four hundred thirty-eight thousand, seven hundred eighty-one".