210297264840 has 192 divisors, whose sum is σ = 736534693440. Its totient is φ = 51730721280.

The previous prime is 210297264833. The next prime is 210297264841. The reversal of 210297264840 is 48462792012.

210297264840 is a `hidden beast` number, since 21 + 0 + 297 + 264 + 84 + 0 = 666.

210297264840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (210297264841) 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 47 ways as a sum of consecutive naturals, for example, 7337979 + ... + 7366581.

It is an arithmetic number, because the mean of its divisors is an integer number (3836118195).

Almost surely, 2^210297264840 is an apocalyptic number.

210297264840 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 210297264840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368267346720).

210297264840 is an abundant number, since it is smaller than the sum of its proper divisors (526237428600).

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

210297264840 is a wasteful number, since it uses less digits than its factorization.

210297264840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30204 (or 30197 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 210297264840 in words is "two hundred ten billion, two hundred ninety-seven million, two hundred sixty-four thousand, eight hundred forty".