13256073 has 24 divisors (see below), whose sum is σ = 21161088. Its totient is φ = 7953792.

The previous prime is 13256071. The next prime is 13256077. The reversal of 13256073 is 37065231.

It is a happy number.

13256073 is a `hidden beast` number, since 1 + 32 + 560 + 73 = 666.

It is not a de Polignac number, because 13256073 - 2¹ = 13256071 is a prime.

It is a super-3 number, since 3×13256073³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13256071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1636 + ... + 5402.

It is an arithmetic number, because the mean of its divisors is an integer number (881712).

Almost surely, 2^13256073 is an apocalyptic number.

It is an amenable number.

13256073 is a deficient number, since it is larger than the sum of its proper divisors (7905015).

13256073 is a wasteful number, since it uses less digits than its factorization.

13256073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813 (or 3810 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 13256073 is about 3640.8890397814. The cubic root of 13256073 is about 236.6673215173.

The spelling of 13256073 in words is "thirteen million, two hundred fifty-six thousand, seventy-three".