256189292 has 12 divisors (see below), whose sum is σ = 457870560. Its totient is φ = 125369136.

The previous prime is 256189289. The next prime is 256189343. The reversal of 256189292 is 292981652.

256189292 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256189292² = 131265906670922528, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681167 + ... + 681542.

It is an arithmetic number, because the mean of its divisors is an integer number (38155880).

Almost surely, 2^256189292 is an apocalyptic number.

It is an amenable number.

256189292 is a deficient number, since it is larger than the sum of its proper divisors (201681268).

256189292 is a wasteful number, since it uses less digits than its factorization.

256189292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362760 (or 1362758 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 256189292 is about 16005.9142819147. The cubic root of 256189292 is about 635.1168834379.

The spelling of 256189292 in words is "two hundred fifty-six million, one hundred eighty-nine thousand, two hundred ninety-two".