256620352 has 28 divisors (see below), whose sum is σ = 512067556. Its totient is φ = 127595520.

The previous prime is 256620319. The next prime is 256620367. The reversal of 256620352 is 253026652.

It can be written as a sum of positive squares in 2 ways, for example, as 7485696 + 249134656 = 2736^2 + 15784^2 .

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, 508 + ... + 22660.

It is an arithmetic number, because the mean of its divisors is an integer number (18288127).

Almost surely, 2^256620352 is an apocalyptic number.

It is an amenable number.

256620352 is a deficient number, since it is larger than the sum of its proper divisors (255447204).

256620352 is a wasteful number, since it uses less digits than its factorization.

256620352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22346 (or 22336 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 256620352 is about 16019.3742699270. The cubic root of 256620352 is about 635.4728963377.

The spelling of 256620352 in words is "two hundred fifty-six million, six hundred twenty thousand, three hundred fifty-two".