215612130 has 32 divisors (see below), whose sum is σ = 534163968. Its totient is φ = 55641600.

The previous prime is 215612119. The next prime is 215612141. The reversal of 215612130 is 31216512.

It is an interprime number because it is at equal distance from previous prime (215612119) and next prime (215612141).

It is a junction number, because it is equal to n+sod(n) for n = 215612097 and 215612106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114991 + ... + 116850.

It is an arithmetic number, because the mean of its divisors is an integer number (16692624).

Almost surely, 2^215612130 is an apocalyptic number.

215612130 is an abundant number, since it is smaller than the sum of its proper divisors (318551838).

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

215612130 is a wasteful number, since it uses less digits than its factorization.

215612130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231882.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 215612130 is about 14683.7369221871. The cubic root of 215612130 is about 599.6406459285.

Adding to 215612130 its reverse (31216512), we get a palindrome (246828642).

The spelling of 215612130 in words is "two hundred fifteen million, six hundred twelve thousand, one hundred thirty".