215483680 has 24 divisors (see below), whose sum is σ = 509080572. Its totient is φ = 86193408.

The previous prime is 215483633. The next prime is 215483689. The reversal of 215483680 is 86384512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 180956304 + 34527376 = 13452^2 + 5876^2 .

It is not an unprimeable number, because it can be changed into a prime (215483689) 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, 673227 + ... + 673546.

Almost surely, 2^215483680 is an apocalyptic number.

215483680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215483680 is an abundant number, since it is smaller than the sum of its proper divisors (293596892).

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

215483680 is a wasteful number, since it uses less digits than its factorization.

215483680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346788 (or 1346780 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 215483680 is about 14679.3623839729. The cubic root of 215483680 is about 599.5215444946.

The spelling of 215483680 in words is "two hundred fifteen million, four hundred eighty-three thousand, six hundred eighty".