213245500 has 96 divisors (see below), whose sum is σ = 511842240. Its totient is φ = 77126400.

The previous prime is 213245449. The next prime is 213245503. The reversal of 213245500 is 5542312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213245503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344191 + ... + 344809.

It is an arithmetic number, because the mean of its divisors is an integer number (5331690).

Almost surely, 2^213245500 is an apocalyptic number.

213245500 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 213245500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255921120).

213245500 is an abundant number, since it is smaller than the sum of its proper divisors (298596740).

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

213245500 is a wasteful number, since it uses less digits than its factorization.

213245500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 213245500 is about 14602.9277886320. The cubic root of 213245500 is about 597.4386181349.

Adding to 213245500 its reverse (5542312), we get a palindrome (218787812).

The spelling of 213245500 in words is "two hundred thirteen million, two hundred forty-five thousand, five hundred".