10256739 has 4 divisors (see below), whose sum is σ = 13675656. Its totient is φ = 6837824.

The previous prime is 10256711. The next prime is 10256759. The reversal of 10256739 is 93765201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93765201 = 3 ⋅31255067.

It is a cyclic number.

It is not a de Polignac number, because 10256739 - 2⁸ = 10256483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10256759) 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, 1709454 + ... + 1709459.

It is an arithmetic number, because the mean of its divisors is an integer number (3418914).

Almost surely, 2^10256739 is an apocalyptic number.

10256739 is a deficient number, since it is larger than the sum of its proper divisors (3418917).

10256739 is an equidigital number, since it uses as much as digits as its factorization.

10256739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418916.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 10256739 is about 3202.6144007670. The cubic root of 10256739 is about 217.2716694865.

The spelling of 10256739 in words is "ten million, two hundred fifty-six thousand, seven hundred thirty-nine".