215482280 has 32 divisors (see below), whose sum is σ = 522131400. Its totient is φ = 79562496.

The previous prime is 215482279. The next prime is 215482307. The reversal of 215482280 is 82284512.

It can be written as a sum of positive squares in 4 ways, for example, as 92582884 + 122899396 = 9622^2 + 11086^2 .

It is a super-2 number, since 2×215482280² = 92865225987996800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206675 + ... + 207714.

Almost surely, 2^215482280 is an apocalyptic number.

215482280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215482280 is an abundant number, since it is smaller than the sum of its proper divisors (306649120).

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

215482280 is a wasteful number, since it uses less digits than its factorization.

215482280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414413 (or 414409 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 215482280 is about 14679.3146979006. The cubic root of 215482280 is about 599.5202461256.

The spelling of 215482280 in words is "two hundred fifteen million, four hundred eighty-two thousand, two hundred eighty".