215998080 has 256 divisors, whose sum is σ = 752025600. Its totient is φ = 52531200.

The previous prime is 215998051. The next prime is 215998093. The reversal of 215998080 is 80899512.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1130785 + ... + 1130975.

It is an arithmetic number, because the mean of its divisors is an integer number (2937600).

Almost surely, 2^215998080 is an apocalyptic number.

215998080 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 215998080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376012800).

215998080 is an abundant number, since it is smaller than the sum of its proper divisors (536027520).

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

215998080 is a wasteful number, since it uses less digits than its factorization.

215998080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 215998080 is about 14696.8731368274. The cubic root of 215998080 is about 599.9982222170.

The spelling of 215998080 in words is "two hundred fifteen million, nine hundred ninety-eight thousand, eighty".