256038115 has 4 divisors (see below), whose sum is σ = 307245744. Its totient is φ = 204830488.

The previous prime is 256038103. The next prime is 256038149. The reversal of 256038115 is 511830652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256038115 - 2¹³ = 256029923 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25603807 + ... + 25603816.

It is an arithmetic number, because the mean of its divisors is an integer number (76811436).

Almost surely, 2^256038115 is an apocalyptic number.

256038115 is a deficient number, since it is larger than the sum of its proper divisors (51207629).

256038115 is an equidigital number, since it uses as much as digits as its factorization.

256038115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51207628.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 256038115 is about 16001.1910494188. The cubic root of 256038115 is about 634.9919316147.

Adding to 256038115 its reverse (511830652), we get a palindrome (767868767).

The spelling of 256038115 in words is "two hundred fifty-six million, thirty-eight thousand, one hundred fifteen".