210020493 has 8 divisors (see below), whose sum is σ = 280874656. Its totient is φ = 139590000.

The previous prime is 210020483. The next prime is 210020497. The reversal of 210020493 is 394020012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210020493 - 2¹² = 210016397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210020497) 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 7 ways as a sum of consecutive naturals, for example, 104758 + ... + 106743.

It is an arithmetic number, because the mean of its divisors is an integer number (35109332).

Almost surely, 2^210020493 is an apocalyptic number.

It is an amenable number.

210020493 is a deficient number, since it is larger than the sum of its proper divisors (70854163).

210020493 is a wasteful number, since it uses less digits than its factorization.

210020493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211835.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 210020493 is about 14492.0838046155. The cubic root of 210020493 is about 594.4115293764.

The spelling of 210020493 in words is "two hundred ten million, twenty thousand, four hundred ninety-three".