256952388 has 48 divisors (see below), whose sum is σ = 747500544. Its totient is φ = 66740640.

The previous prime is 256952387. The next prime is 256952393. The reversal of 256952388 is 883259652.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (256952387) 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 15 ways as a sum of consecutive naturals, for example, 138120 + ... + 139967.

It is an arithmetic number, because the mean of its divisors is an integer number (15572928).

Almost surely, 2^256952388 is an apocalyptic number.

256952388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

256952388 is an abundant number, since it is smaller than the sum of its proper divisors (490548156).

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

256952388 is a wasteful number, since it uses less digits than its factorization.

256952388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278112 (or 278110 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The square root of 256952388 is about 16029.7344956178. The cubic root of 256952388 is about 635.7468534881.

The spelling of 256952388 in words is "two hundred fifty-six million, nine hundred fifty-two thousand, three hundred eighty-eight".