210298542820 has 24 divisors (see below), whose sum is σ = 444850500024. Its totient is φ = 83505405696.

The previous prime is 210298542787. The next prime is 210298542827. The reversal of 210298542820 is 28245892012.

210298542820 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27230940324 + 183067602496 = 165018^2 + 427864^2 .

It is a super-2 number, since 2×210298542820² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210298542827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38372907 + ... + 38378386.

It is an arithmetic number, because the mean of its divisors is an integer number (18535437501).

Almost surely, 2^210298542820 is an apocalyptic number.

210298542820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210298542820 is an abundant number, since it is smaller than the sum of its proper divisors (234551957204).

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

210298542820 is a wasteful number, since it uses less digits than its factorization.

210298542820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76751439 (or 76751437 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 210298542820 in words is "two hundred ten billion, two hundred ninety-eight million, five hundred forty-two thousand, eight hundred twenty".