215041680 has 120 divisors (see below), whose sum is σ = 825369792. Its totient is φ = 49151232.

The previous prime is 215041663. The next prime is 215041681. The reversal of 215041680 is 86140512.

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (215041681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16294 + ... + 26373.

Almost surely, 2^215041680 is an apocalyptic number.

215041680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215041680 is an abundant number, since it is smaller than the sum of its proper divisors (610328112).

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

215041680 is a wasteful number, since it uses less digits than its factorization.

215041680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42693 (or 42684 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 215041680 is about 14664.2995059430. The cubic root of 215041680 is about 599.1113511552. Note that the first 3 decimals are identical.

The spelling of 215041680 in words is "two hundred fifteen million, forty-one thousand, six hundred eighty".