215063280 has 240 divisors, whose sum is σ = 773760000. Its totient is φ = 53374464.

The previous prime is 215063273. The next prime is 215063281. The reversal of 215063280 is 82360512.

215063280 is a `hidden beast` number, since 21 + 5 + 0 + 632 + 8 + 0 = 666.

215063280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215063281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1080621 + ... + 1080819.

It is an arithmetic number, because the mean of its divisors is an integer number (3224000).

Almost surely, 2^215063280 is an apocalyptic number.

215063280 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 215063280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386880000).

215063280 is an abundant number, since it is smaller than the sum of its proper divisors (558696720).

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

215063280 is a wasteful number, since it uses less digits than its factorization.

215063280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 215063280 is about 14665.0359699525. The cubic root of 215063280 is about 599.1314098587.

The spelling of 215063280 in words is "two hundred fifteen million, sixty-three thousand, two hundred eighty".