256154788 has 6 divisors (see below), whose sum is σ = 448270886. Its totient is φ = 128077392.

The previous prime is 256154783. The next prime is 256154819. The reversal of 256154788 is 887451652.

It can be written as a sum of positive squares in only one way, i.e., 232806564 + 23348224 = 15258^2 + 4832^2 .

It is not an unprimeable number, because it can be changed into a prime (256154783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32019345 + ... + 32019352.

Almost surely, 2^256154788 is an apocalyptic number.

It is an amenable number.

256154788 is a deficient number, since it is larger than the sum of its proper divisors (192116098).

256154788 is a wasteful number, since it uses less digits than its factorization.

256154788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64038701 (or 64038699 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The square root of 256154788 is about 16004.8363940404. The cubic root of 256154788 is about 635.0883692917.

It can be divided in two parts, 25615 and 4788, that added together give a palindrome (30403).

The spelling of 256154788 in words is "two hundred fifty-six million, one hundred fifty-four thousand, seven hundred eighty-eight".