215324120 has 64 divisors (see below), whose sum is σ = 531079200. Its totient is φ = 77921280.

The previous prime is 215324113. The next prime is 215324129. The reversal of 215324120 is 21423512.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 215324092 and 215324101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215324129) 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, 99692 + ... + 101828.

Almost surely, 2^215324120 is an apocalyptic number.

215324120 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 215324120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265539600).

215324120 is an abundant number, since it is smaller than the sum of its proper divisors (315755080).

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

215324120 is a wasteful number, since it uses less digits than its factorization.

215324120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388 (or 2384 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 215324120 is about 14673.9265365477. The cubic root of 215324120 is about 599.3735313078.

Adding to 215324120 its reverse (21423512), we get a palindrome (236747632).

It can be divided in two parts, 21532 and 4120, that added together give a palindrome (25652).

The spelling of 215324120 in words is "two hundred fifteen million, three hundred twenty-four thousand, one hundred twenty".