215420208 has 40 divisors (see below), whose sum is σ = 580700928. Its totient is φ = 68684352.

The previous prime is 215420201. The next prime is 215420213. The reversal of 215420208 is 802024512.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (215420201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96460 + ... + 98667.

Almost surely, 2^215420208 is an apocalyptic number.

It is an amenable number.

215420208 is an abundant number, since it is smaller than the sum of its proper divisors (365280720).

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

215420208 is a wasteful number, since it uses less digits than its factorization.

215420208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195161 (or 195155 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 215420208 is about 14677.2002779822. The cubic root of 215420208 is about 599.4626745014.

The spelling of 215420208 in words is "two hundred fifteen million, four hundred twenty thousand, two hundred eight".