256117548 has 12 divisors (see below), whose sum is σ = 597607640. Its totient is φ = 85372512.

The previous prime is 256117541. The next prime is 256117559. The reversal of 256117548 is 845711652.

256117548 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (256117541) 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, 10671553 + ... + 10671576.

Almost surely, 2^256117548 is an apocalyptic number.

It is an amenable number.

256117548 is an abundant number, since it is smaller than the sum of its proper divisors (341490092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256117548 is a wasteful number, since it uses less digits than its factorization.

256117548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21343136 (or 21343134 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 256117548 is about 16003.6729534192. The cubic root of 256117548 is about 635.0575912385.

The spelling of 256117548 in words is "two hundred fifty-six million, one hundred seventeen thousand, five hundred forty-eight".