215130120 has 64 divisors (see below), whose sum is σ = 667656000. Its totient is φ = 55388928.

The previous prime is 215130119. The next prime is 215130133. The reversal of 215130120 is 21031512.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 215130120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27430 + ... + 34389.

It is an arithmetic number, because the mean of its divisors is an integer number (10432125).

Almost surely, 2^215130120 is an apocalyptic number.

215130120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215130120 is an abundant number, since it is smaller than the sum of its proper divisors (452525880).

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

215130120 is a wasteful number, since it uses less digits than its factorization.

215130120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61862 (or 61858 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 215130120 is about 14667.3146826541. The cubic root of 215130120 is about 599.1934718954.

Adding to 215130120 its reverse (21031512), we get a palindrome (236161632).

The spelling of 215130120 in words is "two hundred fifteen million, one hundred thirty thousand, one hundred twenty".