10278013 has 4 divisors (see below), whose sum is σ = 10882620. Its totient is φ = 9673408.

The previous prime is 10278011. The next prime is 10278017. The reversal of 10278013 is 31087201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31087201 = 499 ⋅62299.

It can be written as a sum of positive squares in 2 ways, for example, as 6365529 + 3912484 = 2523^2 + 1978^2 .

It is not a de Polignac number, because 10278013 - 2¹ = 10278011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10278011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302278 + ... + 302311.

It is an arithmetic number, because the mean of its divisors is an integer number (2720655).

Almost surely, 2^10278013 is an apocalyptic number.

It is an amenable number.

10278013 is a deficient number, since it is larger than the sum of its proper divisors (604607).

10278013 is an equidigital number, since it uses as much as digits as its factorization.

10278013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604606.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 10278013 is about 3205.9340292651. The cubic root of 10278013 is about 217.4217836517.

The spelling of 10278013 in words is "ten million, two hundred seventy-eight thousand, thirteen".