256741146 has 24 divisors (see below), whose sum is σ = 563895540. Its totient is φ = 84407616.

The previous prime is 256741117. The next prime is 256741159. The reversal of 256741146 is 641147652.

It can be written as a sum of positive squares in 2 ways, for example, as 214944921 + 41796225 = 14661^2 + 6465^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 256741146.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96381 + ... + 99008.

Almost surely, 2^256741146 is an apocalyptic number.

256741146 is an abundant number, since it is smaller than the sum of its proper divisors (307154394).

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

256741146 is a wasteful number, since it uses less digits than its factorization.

256741146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195470 (or 195467 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 256741146 is about 16023.1440734957. The cubic root of 256741146 is about 635.5725887062.

Adding to 256741146 its reverse (641147652), we get a palindrome (897888798).

The spelling of 256741146 in words is "two hundred fifty-six million, seven hundred forty-one thousand, one hundred forty-six".