210300640 has 48 divisors (see below), whose sum is σ = 542006640. Its totient is φ = 76472320.

The previous prime is 210300589. The next prime is 210300667. The reversal of 210300640 is 46003012.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 57985 + ... + 61504.

It is an arithmetic number, because the mean of its divisors is an integer number (11291805).

Almost surely, 2^210300640 is an apocalyptic number.

210300640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210300640 is an abundant number, since it is smaller than the sum of its proper divisors (331706000).

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

210300640 is a wasteful number, since it uses less digits than its factorization.

210300640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119515 (or 119507 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 210300640 is about 14501.7461017631. The cubic root of 210300640 is about 594.6757077549.

Adding to 210300640 its reverse (46003012), we get a palindrome (256303652).

The spelling of 210300640 in words is "two hundred ten million, three hundred thousand, six hundred forty".