256867104 has 48 divisors (see below), whose sum is σ = 726147072. Its totient is φ = 79035648.

The previous prime is 256867087. The next prime is 256867109. The reversal of 256867104 is 401768652.

256867104 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 (48).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (256867109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101664 + ... + 104159.

It is an arithmetic number, because the mean of its divisors is an integer number (15128064).

Almost surely, 2^256867104 is an apocalyptic number.

256867104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256867104 is an abundant number, since it is smaller than the sum of its proper divisors (469279968).

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

256867104 is a wasteful number, since it uses less digits than its factorization.

256867104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205849 (or 205841 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 256867104 is about 16027.0740935456. The cubic root of 256867104 is about 635.6765096724.

The spelling of 256867104 in words is "two hundred fifty-six million, eight hundred sixty-seven thousand, one hundred four".