10278491 has 4 divisors (see below), whose sum is σ = 10359552. Its totient is φ = 10197432.

The previous prime is 10278481. The next prime is 10278503. The reversal of 10278491 is 19487201.

10278491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19487201 = 911 ⋅21391.

It is a cyclic number.

It is not a de Polignac number, because 10278491 - 2¹⁴ = 10262107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10278431) 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, 40340 + ... + 40593.

It is an arithmetic number, because the mean of its divisors is an integer number (2589888).

Almost surely, 2^10278491 is an apocalyptic number.

10278491 is a deficient number, since it is larger than the sum of its proper divisors (81061).

10278491 is an equidigital number, since it uses as much as digits as its factorization.

10278491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81060.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 10278491 is about 3206.0085776554. The cubic root of 10278491 is about 217.4251541476.

The spelling of 10278491 in words is "ten million, two hundred seventy-eight thousand, four hundred ninety-one".