215489352 has 64 divisors (see below), whose sum is σ = 582120000. Its totient is φ = 66081024.

The previous prime is 215489341. The next prime is 215489359. The reversal of 215489352 is 253984512.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 215489352.

It is not an unprimeable number, because it can be changed into a prime (215489359) 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, 107899 + ... + 109877.

It is an arithmetic number, because the mean of its divisors is an integer number (9095625).

Almost surely, 2^215489352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215489352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291060000).

215489352 is an abundant number, since it is smaller than the sum of its proper divisors (366630648).

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

215489352 is a wasteful number, since it uses less digits than its factorization.

215489352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350 (or 2346 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 215489352 is about 14679.5555791039. Note that the first 4 decimals coincide. The cubic root of 215489352 is about 599.5268046862.

The spelling of 215489352 in words is "two hundred fifteen million, four hundred eighty-nine thousand, three hundred fifty-two".