256484306 has 32 divisors (see below), whose sum is σ = 439037760. Its totient is φ = 111398976.

The previous prime is 256484299. The next prime is 256484353. The reversal of 256484306 is 603484652.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 256484306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75905 + ... + 79211.

It is an arithmetic number, because the mean of its divisors is an integer number (13719930).

Almost surely, 2^256484306 is an apocalyptic number.

256484306 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

256484306 is a deficient number, since it is larger than the sum of its proper divisors (182553454).

256484306 is a wasteful number, since it uses less digits than its factorization.

256484306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498.

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 256484306 is about 16015.1274112946. The cubic root of 256484306 is about 635.3605788914.

The spelling of 256484306 in words is "two hundred fifty-six million, four hundred eighty-four thousand, three hundred six".