720020210 has 192 divisors, whose sum is σ = 1763324640. Its totient is φ = 209018880.

The previous prime is 720020183. The next prime is 720020239. The reversal of 720020210 is 12020027.

It can be written as a sum of positive squares in 16 ways, for example, as 3869089 + 716151121 = 1967^2 + 26761^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6605636 + ... + 6605744.

Almost surely, 2^720020210 is an apocalyptic number.

720020210 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

720020210 is an abundant number, since it is smaller than the sum of its proper divisors (1043304430).

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

720020210 is a wasteful number, since it uses less digits than its factorization.

720020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 720020210 is about 26833.1923184700. The cubic root of 720020210 is about 896.2893352691.

Adding to 720020210 its reverse (12020027), we get a palindrome (732040237).

The spelling of 720020210 in words is "seven hundred twenty million, twenty thousand, two hundred ten".