215135350 has 24 divisors (see below), whose sum is σ = 413062848. Its totient is φ = 83277600.

The previous prime is 215135341. The next prime is 215135351. The reversal of 215135350 is 53531512.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215135351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67849 + ... + 70948.

It is an arithmetic number, because the mean of its divisors is an integer number (17210952).

Almost surely, 2^215135350 is an apocalyptic number.

215135350 is a deficient number, since it is larger than the sum of its proper divisors (197927498).

215135350 is a wasteful number, since it uses less digits than its factorization.

215135350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138840 (or 138835 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 215135350 is about 14667.4929691478. The cubic root of 215135350 is about 599.1983274939.

Adding to 215135350 its reverse (53531512), we get a palindrome (268666862).

The spelling of 215135350 in words is "two hundred fifteen million, one hundred thirty-five thousand, three hundred fifty".