256949500 has 24 divisors (see below), whose sum is σ = 561178800. Its totient is φ = 102779600.

The previous prime is 256949477. The next prime is 256949503. The reversal of 256949500 is 5949652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256949503) 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 7 ways as a sum of consecutive naturals, for example, 256450 + ... + 257449.

It is an arithmetic number, because the mean of its divisors is an integer number (23382450).

Almost surely, 2^256949500 is an apocalyptic number.

256949500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256949500 is an abundant number, since it is smaller than the sum of its proper divisors (304229300).

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

256949500 is a wasteful number, since it uses less digits than its factorization.

256949500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513918 (or 513906 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 256949500 is about 16029.6444127747. The cubic root of 256949500 is about 635.7444716671.

The spelling of 256949500 in words is "two hundred fifty-six million, nine hundred forty-nine thousand, five hundred".