215066880 has 432 divisors, whose sum is σ = 894781440. Its totient is φ = 48771072.

The previous prime is 215066879. The next prime is 215066899. The reversal of 215066880 is 88660512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1693377 + ... + 1693503.

Almost surely, 2^215066880 is an apocalyptic number.

215066880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215066880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447390720).

215066880 is an abundant number, since it is smaller than the sum of its proper divisors (679714560).

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

215066880 is a wasteful number, since it uses less digits than its factorization.

215066880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 215066880 is about 14665.1587103584. The cubic root of 215066880 is about 599.1347528454.

The spelling of 215066880 in words is "two hundred fifteen million, sixty-six thousand, eight hundred eighty".