215213350 has 96 divisors (see below), whose sum is σ = 459613440. Its totient is φ = 74256000.

The previous prime is 215213281. The next prime is 215213351. The reversal of 215213350 is 53312512.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215213351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1642785 + ... + 1642915.

It is an arithmetic number, because the mean of its divisors is an integer number (4787640).

Almost surely, 2^215213350 is an apocalyptic number.

215213350 is an abundant number, since it is smaller than the sum of its proper divisors (244400090).

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

215213350 is a wasteful number, since it uses less digits than its factorization.

215213350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 215213350 is about 14670.1516692909. The cubic root of 215213350 is about 599.2707343488.

Adding to 215213350 its reverse (53312512), we get a palindrome (268525862).

The spelling of 215213350 in words is "two hundred fifteen million, two hundred thirteen thousand, three hundred fifty".