210130240 has 28 divisors (see below), whose sum is σ = 500373396. Its totient is φ = 84051968.

The previous prime is 210130223. The next prime is 210130267. The reversal of 210130240 is 42031012.

It can be written as a sum of positive squares in 2 ways, for example, as 126517504 + 83612736 = 11248^2 + 9144^2 .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 210130240.

It is a congruent number.

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, 328009 + ... + 328648.

Almost surely, 2^210130240 is an apocalyptic number.

210130240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210130240 is an abundant number, since it is smaller than the sum of its proper divisors (290243156).

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

210130240 is an equidigital number, since it uses as much as digits as its factorization.

210130240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656674 (or 656664 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 210130240 is about 14495.8697565893. The cubic root of 210130240 is about 594.5150486752.

Adding to 210130240 its reverse (42031012), we get a palindrome (252161252).

The spelling of 210130240 in words is "two hundred ten million, one hundred thirty thousand, two hundred forty".