215042208 has 24 divisors (see below), whose sum is σ = 564486048. Its totient is φ = 71680704.

The previous prime is 215042207. The next prime is 215042237. The reversal of 215042208 is 802240512.

It is a tau number, because it is divible by the number of its divisors (24).

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 (215042207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119916 + ... + 1120107.

It is an arithmetic number, because the mean of its divisors is an integer number (23520252).

Almost surely, 2^215042208 is an apocalyptic number.

It is an amenable number.

215042208 is an abundant number, since it is smaller than the sum of its proper divisors (349443840).

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

215042208 is a wasteful number, since it uses less digits than its factorization.

215042208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240036 (or 2240028 counting only the distinct ones).

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

The square root of 215042208 is about 14664.3175088376. The cubic root of 215042208 is about 599.1118414950. Note that the first 3 decimals are identical.

The spelling of 215042208 in words is "two hundred fifteen million, forty-two thousand, two hundred eight".