256204115 has 8 divisors (see below), whose sum is σ = 307533120. Its totient is φ = 204904512.

The previous prime is 256204099. The next prime is 256204129. The reversal of 256204115 is 511402652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256204115 - 2⁴ = 256204099 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23942 + ... + 32948.

It is an arithmetic number, because the mean of its divisors is an integer number (38441640).

Almost surely, 2^256204115 is an apocalyptic number.

256204115 is a deficient number, since it is larger than the sum of its proper divisors (51329005).

256204115 is an equidigital number, since it uses as much as digits as its factorization.

256204115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14701.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 256204115 is about 16006.3773228048. The cubic root of 256204115 is about 635.1291323964.

Adding to 256204115 its reverse (511402652), we get a palindrome (767606767).

The spelling of 256204115 in words is "two hundred fifty-six million, two hundred four thousand, one hundred fifteen".