210345912 has 96 divisors (see below), whose sum is σ = 672122880. Its totient is φ = 58155840.

The previous prime is 210345901. The next prime is 210345917. The reversal of 210345912 is 219543012.

It is a super-2 number, since 2×210345912² = 88490805390223488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210345917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8893 + ... + 22355.

It is an arithmetic number, because the mean of its divisors is an integer number (7001280).

Almost surely, 2^210345912 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 210345912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336061440).

210345912 is an abundant number, since it is smaller than the sum of its proper divisors (461776968).

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

210345912 is a wasteful number, since it uses less digits than its factorization.

210345912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13513 (or 13506 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 210345912 is about 14503.3069332480. The cubic root of 210345912 is about 594.7183771876.

Adding to 210345912 its reverse (219543012), we get a palindrome (429888924).

The spelling of 210345912 in words is "two hundred ten million, three hundred forty-five thousand, nine hundred twelve".