210144340 has 36 divisors (see below), whose sum is σ = 513354996. Its totient is φ = 72049152.

The previous prime is 210144317. The next prime is 210144377. The reversal of 210144340 is 43441012.

It can be written as a sum of positive squares in 2 ways, for example, as 165173904 + 44970436 = 12852^2 + 6706^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106237 + ... + 108196.

It is an arithmetic number, because the mean of its divisors is an integer number (14259861).

Almost surely, 2^210144340 is an apocalyptic number.

210144340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210144340 is an abundant number, since it is smaller than the sum of its proper divisors (303210656).

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

210144340 is a wasteful number, since it uses less digits than its factorization.

210144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214456 (or 214447 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 210144340 is about 14496.3560938603. The cubic root of 210144340 is about 594.5283459437.

Adding to 210144340 its reverse (43441012), we get a palindrome (253585352).

The spelling of 210144340 in words is "two hundred ten million, one hundred forty-four thousand, three hundred forty".