256909614 has 32 divisors (see below), whose sum is σ = 565125120. Its totient is φ = 77366112.

The previous prime is 256909607. The next prime is 256909643. The reversal of 256909614 is 416909652.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31374 + ... + 38705.

It is an arithmetic number, because the mean of its divisors is an integer number (17660160).

Almost surely, 2^256909614 is an apocalyptic number.

256909614 is an abundant number, since it is smaller than the sum of its proper divisors (308215506).

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

256909614 is a wasteful number, since it uses less digits than its factorization.

256909614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70144.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 256909614 is about 16028.4002320880. The cubic root of 256909614 is about 635.7115746501.

The spelling of 256909614 in words is "two hundred fifty-six million, nine hundred nine thousand, six hundred fourteen".