10278981 has 20 divisors (see below), whose sum is σ = 16165600. Its totient is φ = 6491016.

The previous prime is 10278977. The next prime is 10278991. The reversal of 10278981 is 18987201.

It is not a de Polignac number, because 10278981 - 2² = 10278977 is a prime.

It is a super-2 number, since 2×10278981² = 211314900796722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10278971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1801 + ... + 4878.

It is an arithmetic number, because the mean of its divisors is an integer number (808280).

Almost surely, 2^10278981 is an apocalyptic number.

It is an amenable number.

10278981 is a deficient number, since it is larger than the sum of its proper divisors (5886619).

10278981 is an equidigital number, since it uses as much as digits as its factorization.

10278981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710 (or 6701 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 10278981 is about 3206.0849957542. The cubic root of 10278981 is about 217.4286091499.

The spelling of 10278981 in words is "ten million, two hundred seventy-eight thousand, nine hundred eighty-one".