256320116 has 12 divisors (see below), whose sum is σ = 483064932. Its totient is φ = 118301568.

The previous prime is 256320107. The next prime is 256320139. The reversal of 256320116 is 611023652.

256320116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37871716 + 218448400 = 6154^2 + 14780^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2464565 + ... + 2464668.

It is an arithmetic number, because the mean of its divisors is an integer number (40255411).

Almost surely, 2^256320116 is an apocalyptic number.

256320116 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

256320116 is a deficient number, since it is larger than the sum of its proper divisors (226744816).

256320116 is a wasteful number, since it uses less digits than its factorization.

256320116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4929250 (or 4929248 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 256320116 is about 16010.0004996877. Note that the first 3 decimals coincide. The cubic root of 256320116 is about 635.2249732952.

Adding to 256320116 its reverse (611023652), we get a palindrome (867343768).

It can be divided in two parts, 2563201 and 16, that multiplied together give a square (41011216 = 6404²).

The spelling of 256320116 in words is "two hundred fifty-six million, three hundred twenty thousand, one hundred sixteen".