256746164 has 24 divisors (see below), whose sum is σ = 489266400. Its totient is φ = 117421920.

The previous prime is 256746137. The next prime is 256746167. The reversal of 256746164 is 461647652.

It is a happy number.

256746164 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256746167) 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, 56042 + ... + 60449.

It is an arithmetic number, because the mean of its divisors is an integer number (20386100).

Almost surely, 2^256746164 is an apocalyptic number.

It is an amenable number.

256746164 is a deficient number, since it is larger than the sum of its proper divisors (232520236).

256746164 is a wasteful number, since it uses less digits than its factorization.

256746164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116543 (or 116541 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 256746164 is about 16023.3006587282. The cubic root of 256746164 is about 635.5767294299.

The spelling of 256746164 in words is "two hundred fifty-six million, seven hundred forty-six thousand, one hundred sixty-four".