256002213 has 16 divisors (see below), whose sum is σ = 356870016. Its totient is φ = 162930240.

The previous prime is 256002211. The next prime is 256002217. The reversal of 256002213 is 312200652.

It is not a de Polignac number, because 256002213 - 2¹ = 256002211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256002213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256002211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35103 + ... + 41763.

It is an arithmetic number, because the mean of its divisors is an integer number (22304376).

Almost surely, 2^256002213 is an apocalyptic number.

256002213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

256002213 is a deficient number, since it is larger than the sum of its proper divisors (100867803).

256002213 is a wasteful number, since it uses less digits than its factorization.

256002213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7244.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 256002213 is about 16000.0691561005. The cubic root of 256002213 is about 634.9622504271.

Adding to 256002213 its reverse (312200652), we get a palindrome (568202865).

The spelling of 256002213 in words is "two hundred fifty-six million, two thousand, two hundred thirteen".