213662256 has 80 divisors (see below), whose sum is σ = 604648800. Its totient is φ = 64712704.

The previous prime is 213662243. The next prime is 213662269. The reversal of 213662256 is 652266312.

It is an interprime number because it is at equal distance from previous prime (213662243) and next prime (213662269).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19150 + ... + 28178.

It is an arithmetic number, because the mean of its divisors is an integer number (7558110).

Almost surely, 2^213662256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213662256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302324400).

213662256 is an abundant number, since it is smaller than the sum of its proper divisors (390986544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213662256 is a wasteful number, since it uses less digits than its factorization.

213662256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9086 (or 9080 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 213662256 is about 14617.1904277122. The cubic root of 213662256 is about 597.8275659325.

The spelling of 213662256 in words is "two hundred thirteen million, six hundred sixty-two thousand, two hundred fifty-six".