215260680 has 96 divisors (see below), whose sum is σ = 675279360. Its totient is φ = 54890880.

The previous prime is 215260673. The next prime is 215260697. The reversal of 215260680 is 86062512.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61785 + ... + 65175.

It is an arithmetic number, because the mean of its divisors is an integer number (7034160).

Almost surely, 2^215260680 is an apocalyptic number.

215260680 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 215260680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337639680).

215260680 is an abundant number, since it is smaller than the sum of its proper divisors (460018680).

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

215260680 is a wasteful number, since it uses less digits than its factorization.

215260680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451 (or 3424 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 215260680 is about 14671.7647200328. The cubic root of 215260680 is about 599.3146619287.

The spelling of 215260680 in words is "two hundred fifteen million, two hundred sixty thousand, six hundred eighty".