210700980 has 144 divisors (see below), whose sum is σ = 762632640. Its totient is φ = 48154176.

The previous prime is 210700967. The next prime is 210700991. The reversal of 210700980 is 89007012.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 47 ways as a sum of consecutive naturals, for example, 22479 + ... + 30441.

It is an arithmetic number, because the mean of its divisors is an integer number (5296060).

Almost surely, 2^210700980 is an apocalyptic number.

210700980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210700980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381316320).

210700980 is an abundant number, since it is smaller than the sum of its proper divisors (551931660).

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

210700980 is a wasteful number, since it uses less digits than its factorization.

210700980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7995 (or 7980 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 210700980 is about 14515.5427042877. The cubic root of 210700980 is about 595.0528211469.

Adding to 210700980 its reverse (89007012), we get a palindrome (299707992).

The spelling of 210700980 in words is "two hundred ten million, seven hundred thousand, nine hundred eighty".