256532498 has 8 divisors (see below), whose sum is σ = 385044492. Its totient is φ = 128184336.

The previous prime is 256532491. The next prime is 256532503. The reversal of 256532498 is 894235652.

It can be written as a sum of positive squares in 2 ways, for example, as 214710409 + 41822089 = 14653^2 + 6467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256532491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36965 + ... + 43352.

Almost surely, 2^256532498 is an apocalyptic number.

256532498 is a deficient number, since it is larger than the sum of its proper divisors (128511994).

256532498 is a wasteful number, since it uses less digits than its factorization.

256532498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81916.

The product of its digits is 518400, while the sum is 44.

The square root of 256532498 is about 16016.6319181031. The cubic root of 256532498 is about 635.4003699933.

The spelling of 256532498 in words is "two hundred fifty-six million, five hundred thirty-two thousand, four hundred ninety-eight".