215420350 has 24 divisors (see below), whose sum is σ = 401068080. Its totient is φ = 86085120.

The previous prime is 215420329. The next prime is 215420357. The reversal of 215420350 is 53024512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215420357) 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 11 ways as a sum of consecutive naturals, for example, 100894 + ... + 103006.

It is an arithmetic number, because the mean of its divisors is an integer number (16711170).

Almost surely, 2^215420350 is an apocalyptic number.

215420350 is a deficient number, since it is larger than the sum of its proper divisors (185647730).

215420350 is a wasteful number, since it uses less digits than its factorization.

215420350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164 (or 4159 counting only the distinct ones).

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

The square root of 215420350 is about 14677.2051154162. The cubic root of 215420350 is about 599.4628062186.

Adding to 215420350 its reverse (53024512), we get a palindrome (268444862).

The spelling of 215420350 in words is "two hundred fifteen million, four hundred twenty thousand, three hundred fifty".