214205540 has 12 divisors (see below), whose sum is σ = 449831676. Its totient is φ = 85682208.

The previous prime is 214205531. The next prime is 214205581. The reversal of 214205540 is 45502412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26460736 + 187744804 = 5144^2 + 13702^2 .

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, 5355119 + ... + 5355158.

It is an arithmetic number, because the mean of its divisors is an integer number (37485973).

Almost surely, 2^214205540 is an apocalyptic number.

214205540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214205540 is an abundant number, since it is smaller than the sum of its proper divisors (235626136).

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

214205540 is a wasteful number, since it uses less digits than its factorization.

214205540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10710286 (or 10710284 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 214205540 is about 14635.7623648377. The cubic root of 214205540 is about 598.3338404329. Note that the first 3 decimals are identical.

Adding to 214205540 its reverse (45502412), we get a palindrome (259707952).

The spelling of 214205540 in words is "two hundred fourteen million, two hundred five thousand, five hundred forty".