215883460 has 48 divisors (see below), whose sum is σ = 493122672. Its totient is φ = 78912000.

The previous prime is 215883457. The next prime is 215883461. The reversal of 215883460 is 64388512.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 18593344 + 197290116 = 4312^2 + 14046^2 .

It is not an unprimeable number, because it can be changed into a prime (215883461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22150 + ... + 30370.

It is an arithmetic number, because the mean of its divisors is an integer number (10273389).

Almost surely, 2^215883460 is an apocalyptic number.

215883460 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 215883460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246561336).

215883460 is an abundant number, since it is smaller than the sum of its proper divisors (277239212).

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

215883460 is a wasteful number, since it uses less digits than its factorization.

215883460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8344 (or 8342 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 215883460 is about 14692.9731504553. The cubic root of 215883460 is about 599.8920731801.

The spelling of 215883460 in words is "two hundred fifteen million, eight hundred eighty-three thousand, four hundred sixty".