256488338 has 8 divisors (see below), whose sum is σ = 384906060. Its totient is φ = 128186320.

The previous prime is 256488319. The next prime is 256488373. The reversal of 256488338 is 833884652.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 254306809 + 2181529 = 15947^2 + 1477^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 256488292 and 256488301.

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, 23153 + ... + 32388.

Almost surely, 2^256488338 is an apocalyptic number.

256488338 is a deficient number, since it is larger than the sum of its proper divisors (128417722).

256488338 is a wasteful number, since it uses less digits than its factorization.

256488338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57852.

The product of its digits is 1105920, while the sum is 47.

The square root of 256488338 is about 16015.2532917841. The cubic root of 256488338 is about 635.3639082185.

The spelling of 256488338 in words is "two hundred fifty-six million, four hundred eighty-eight thousand, three hundred thirty-eight".