215080880 has 80 divisors (see below), whose sum is σ = 574248960. Its totient is φ = 73387776.

The previous prime is 215080867. The next prime is 215080903. The reversal of 215080880 is 88080512.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133037 + ... + 134643.

It is an arithmetic number, because the mean of its divisors is an integer number (7178112).

Almost surely, 2^215080880 is an apocalyptic number.

215080880 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 215080880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287124480).

215080880 is an abundant number, since it is smaller than the sum of its proper divisors (359168080).

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

215080880 is a wasteful number, since it uses less digits than its factorization.

215080880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866 (or 1860 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 215080880 is about 14665.6360243939. The cubic root of 215080880 is about 599.1477529945.

The spelling of 215080880 in words is "two hundred fifteen million, eighty thousand, eight hundred eighty".