256380753 has 8 divisors (see below), whose sum is σ = 344977600. Its totient is φ = 169352208.

The previous prime is 256380739. The next prime is 256380767. The reversal of 256380753 is 357083652.

It is an interprime number because it is at equal distance from previous prime (256380739) and next prime (256380767).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256380753 - 2¹⁷ = 256249681 is a prime.

It is a super-3 number, since 3×256380753³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256380703) 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 in 7 ways as a sum of consecutive naturals, for example, 391693 + ... + 392346.

It is an arithmetic number, because the mean of its divisors is an integer number (43122200).

Almost surely, 2^256380753 is an apocalyptic number.

It is an amenable number.

256380753 is a deficient number, since it is larger than the sum of its proper divisors (88596847).

256380753 is a wasteful number, since it uses less digits than its factorization.

256380753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784151.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 256380753 is about 16011.8941103169. The cubic root of 256380753 is about 635.2750605329.

The spelling of 256380753 in words is "two hundred fifty-six million, three hundred eighty thousand, seven hundred fifty-three".