210243156 has 48 divisors (see below), whose sum is σ = 517104000. Its totient is φ = 66381952.

The previous prime is 210243133. The next prime is 210243157. The reversal of 210243156 is 651342012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210243157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12745 + ... + 24143.

It is an arithmetic number, because the mean of its divisors is an integer number (10773000).

Almost surely, 2^210243156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210243156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258552000).

210243156 is an abundant number, since it is smaller than the sum of its proper divisors (306860844).

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

210243156 is a wasteful number, since it uses less digits than its factorization.

210243156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11488 (or 11486 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 210243156 is about 14499.7639980794. The cubic root of 210243156 is about 594.6215195325.

Adding to 210243156 its reverse (651342012), we get a palindrome (861585168).

The spelling of 210243156 in words is "two hundred ten million, two hundred forty-three thousand, one hundred fifty-six".