256532838 has 8 divisors (see below), whose sum is σ = 513065688. Its totient is φ = 85510944.

The previous prime is 256532833. The next prime is 256532849. The reversal of 256532838 is 838235652.

256532838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

256532838 is an admirable number.

It is a super-3 number, since 3×256532838³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 256532838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256532833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21377731 + ... + 21377742.

It is an arithmetic number, because the mean of its divisors is an integer number (64133211).

Almost surely, 2^256532838 is an apocalyptic number.

256532838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256532838 is a wasteful number, since it uses less digits than its factorization.

256532838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42755478.

The product of its digits is 345600, while the sum is 42.

The square root of 256532838 is about 16016.6425320665. The cubic root of 256532838 is about 635.4006507064.

The spelling of 256532838 in words is "two hundred fifty-six million, five hundred thirty-two thousand, eight hundred thirty-eight".