215018130 has 32 divisors (see below), whose sum is σ = 516429504. Its totient is φ = 57295296.

The previous prime is 215018123. The next prime is 215018147. The reversal of 215018130 is 31810512.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 215018097 and 215018106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75309 + ... + 78111.

It is an arithmetic number, because the mean of its divisors is an integer number (16138422).

Almost surely, 2^215018130 is an apocalyptic number.

215018130 is an abundant number, since it is smaller than the sum of its proper divisors (301411374).

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

215018130 is a wasteful number, since it uses less digits than its factorization.

215018130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 215018130 is about 14663.4965134514. The cubic root of 215018130 is about 599.0894800658.

Adding to 215018130 its reverse (31810512), we get a palindrome (246828642).

The spelling of 215018130 in words is "two hundred fifteen million, eighteen thousand, one hundred thirty".