256570472 has 32 divisors (see below), whose sum is σ = 489230280. Its totient is φ = 126120960.

The previous prime is 256570463. The next prime is 256570481. The reversal of 256570472 is 274075652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (256570463) and next prime (256570481).

It can be written as a sum of positive squares in 4 ways, for example, as 199204996 + 57365476 = 14114^2 + 7574^2 .

It is a super-3 number, since 3×256570472³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268748 + ... + 269700.

Almost surely, 2^256570472 is an apocalyptic number.

It is an amenable number.

256570472 is a deficient number, since it is larger than the sum of its proper divisors (232659808).

256570472 is a wasteful number, since it uses less digits than its factorization.

256570472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 256570472 is about 16017.8173294616. The cubic root of 256570472 is about 635.4317208012.

It can be divided in two parts, 2565 and 70472, that added together give a palindrome (73037).

The spelling of 256570472 in words is "two hundred fifty-six million, five hundred seventy thousand, four hundred seventy-two".