10781994 has 32 divisors (see below), whose sum is σ = 22230720. Its totient is φ = 3484800.

The previous prime is 10781993. The next prime is 10782011. The reversal of 10781994 is 49918701.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (10781993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32409 + ... + 32739.

It is an arithmetic number, because the mean of its divisors is an integer number (694710).

Almost surely, 2^10781994 is an apocalyptic number.

10781994 is an abundant number, since it is smaller than the sum of its proper divisors (11448726).

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

10781994 is a wasteful number, since it uses less digits than its factorization.

10781994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 10781994 is about 3283.5946765702. The cubic root of 10781994 is about 220.9189796032.

The spelling of 10781994 in words is "ten million, seven hundred eighty-one thousand, nine hundred ninety-four".