210803490 has 48 divisors (see below), whose sum is σ = 552434688. Its totient is φ = 55768608.

The previous prime is 210803443. The next prime is 210803491. The reversal of 210803490 is 94308012.

It is a super-2 number, since 2×210803490² = 88876222792360200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210803491) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2209 + ... + 20651.

It is an arithmetic number, because the mean of its divisors is an integer number (11509056).

Almost surely, 2^210803490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210803490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276217344).

210803490 is an abundant number, since it is smaller than the sum of its proper divisors (341631198).

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

210803490 is a wasteful number, since it uses less digits than its factorization.

210803490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18583 (or 18580 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 210803490 is about 14519.0733175365. The cubic root of 210803490 is about 595.1493069740.

The spelling of 210803490 in words is "two hundred ten million, eight hundred three thousand, four hundred ninety".