256763124 has 18 divisors (see below), whose sum is σ = 649040210. Its totient is φ = 85587696.

The previous prime is 256763123. The next prime is 256763141. The reversal of 256763124 is 421367652.

It can be written as a sum of positive squares in only one way, i.e., 197964900 + 58798224 = 14070^2 + 7668^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 7132309 = 256763124 / (2 + 5 + 6 + 7 + 6 + 3 + 1 + 2 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256763123) 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 5 ways as a sum of consecutive naturals, for example, 3566119 + ... + 3566190.

Almost surely, 2^256763124 is an apocalyptic number.

It is an amenable number.

256763124 is an abundant number, since it is smaller than the sum of its proper divisors (392277086).

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

256763124 is a wasteful number, since it uses less digits than its factorization.

256763124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7132319 (or 7132314 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 256763124 is about 16023.8298792767. The cubic root of 256763124 is about 635.5907239837.

The spelling of 256763124 in words is "two hundred fifty-six million, seven hundred sixty-three thousand, one hundred twenty-four".