214681936 has 90 divisors (see below), whose sum is σ = 499237578. Its totient is φ = 89147520.

The previous prime is 214681927. The next prime is 214681937. The reversal of 214681936 is 639186412.

It can be written as a sum of positive squares in only one way, i.e., 126697536 + 87984400 = 11256^2 + 9380^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214681937) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 3204175 + ... + 3204241.

Almost surely, 2^214681936 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 214681936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249618789).

214681936 is an abundant number, since it is smaller than the sum of its proper divisors (284555642).

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

214681936 is an equidigital number, since it uses as much as digits as its factorization.

214681936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 137 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 214681936 is about 14652.0283920009. The cubic root of 214681936 is about 598.7770795063. Note that the first 3 decimals are identical.

The spelling of 214681936 in words is "two hundred fourteen million, six hundred eighty-one thousand, nine hundred thirty-six".