10278681 has 20 divisors (see below), whose sum is σ = 15999312. Its totient is φ = 5869416.

The previous prime is 10278649. The next prime is 10278689. The reversal of 10278681 is 18687201.

It is a happy number.

It is not a de Polignac number, because 10278681 - 2⁵ = 10278649 is a prime.

It is a super-2 number, since 2×10278681² = 211302566199522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10278689) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 6490 + ... + 7916.

Almost surely, 2^10278681 is an apocalyptic number.

It is an amenable number.

10278681 is a deficient number, since it is larger than the sum of its proper divisors (5720631).

10278681 is an frugal number, since it uses more digits than its factorization.

10278681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 10278681 is about 3206.0382093793. The cubic root of 10278681 is about 217.4264938554.

The spelling of 10278681 in words is "ten million, two hundred seventy-eight thousand, six hundred eighty-one".