256021282 has 8 divisors (see below), whose sum is σ = 418943952. Its totient is φ = 116373300.

The previous prime is 256021279. The next prime is 256021319. The reversal of 256021282 is 282120652.

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

It is a self number, because there is not a number n which added to its sum of digits gives 256021282.

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, 5818644 + ... + 5818687.

It is an arithmetic number, because the mean of its divisors is an integer number (52367994).

Almost surely, 2^256021282 is an apocalyptic number.

256021282 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

256021282 is a deficient number, since it is larger than the sum of its proper divisors (162922670).

256021282 is a wasteful number, since it uses less digits than its factorization.

256021282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11637344.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 256021282 is about 16000.6650486784. The cubic root of 256021282 is about 634.9780156483.

The spelling of 256021282 in words is "two hundred fifty-six million, twenty-one thousand, two hundred eighty-two".