256889050 has 36 divisors (see below), whose sum is σ = 525212478. Its totient is φ = 93412000.

The previous prime is 256889029. The next prime is 256889053. The reversal of 256889050 is 50988652.

It can be written as a sum of positive squares in 3 ways, for example, as 249861249 + 7027801 = 15807^2 + 2651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 256888988 and 256889006.

It is not an unprimeable number, because it can be changed into a prime (256889053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15181 + ... + 27280.

Almost surely, 2^256889050 is an apocalyptic number.

256889050 is an abundant number, since it is smaller than the sum of its proper divisors (268323428).

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

256889050 is a wasteful number, since it uses less digits than its factorization.

256889050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42495 (or 42479 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 256889050 is about 16027.7587328984. The cubic root of 256889050 is about 635.6946126255.

The spelling of 256889050 in words is "two hundred fifty-six million, eight hundred eighty-nine thousand, fifty".